Pebble Technology
| Company type | Private |
|---|---|
| Industry | Consumer electronics, Wearable technology |
| Founded | 2012 |
| Founder | Eric Migicovsky |
| Defunct | 2016 |
| Fate | Acquired by Fitbit; ceased operations |
| Headquarters | Palo Alto , United States |
Area served | Worldwide |
Key people | Eric Migicovsky (Founder, CEO) |
| Products | Smartwatches (Pebble, Pebble Steel, Pebble Time, Pebble Time Steel, Pebble Time Round) |
| Parent | Fitbit (from 2016) |
Pebble was a smartwatch created by Pebble Technology Corporation, based in Palo Alto, California, with production spanning from 2013 until 2016. The company, established by Eric Migicovsky, gained significant attention through its 2012 Kickstarter campaign, which amassed $10.3 million, becoming the platform's top-funded initiative at that point. Pebble devices synchronized with Android and iOS smartphones to deliver notifications and messages. An online app store featured applications compatible with Pebble, developed by partners such as ESPN, Uber, Runkeeper, and GoPro. After Pebble's discontinuation, Migicovsky founded Core Devices, which produces new hardware running PebbleOS and continues advancing the open-source PebbleOS software.
The Pebble Steel, introduced at CES 2014 and released in February 2014, offered a slimmer profile with a stainless steel casing, physical metal buttons, and a screen protected by Corning Gorilla Glass. In 2015, the company unveiled its second generation of smartwatches: the Pebble Time and Time Steel. These models were also funded through Kickstarter, raising $20.3 million from over 75,000 supporters, setting a new crowdfunding record.
In December 2016, Pebble announced it would cease operations, halting production and support services while invalidating warranties. The firm was acquired by Fitbit, with many employees transitioning to the acquiring company. By June 2018, support for the Pebble app store, online community forum, cloud-based development tools, voice recognition features, and reply functions had been discontinued; however, some of these services were later revived by the unofficial "Rebble" community.
Following Google's acquisition of Fitbit in 2021, it retained ownership of Pebble’s operating system, branding, and design assets. In January 2025, Google released the PebbleOS source code to the public. Eric Migicovsky announced plans for upcoming devices and launched RePebble to support their development. By March 2025, Core Devices had begun manufacturing devices powered by PebbleOS. In July 2025, Core Devices reclaimed the Pebble trademark and resumed using the Pebble brand for their smartwatch lineup.
Development
The initial concept for the Pebble Smartwatch originated with Eric Migicovsky, who envisioned a device capable of displaying notifications from smartphones and certain Android gadgets. Migicovsky refined this idea during his participation in the Y Combinator accelerator program, notably generating revenue while still enrolled—a rarity among participants. He secured $375,000 in angel investment from figures including Tim Draper of Draper Fisher Jurvetson, yet encountered difficulties obtaining further capital due to the inherent challenges faced by hardware startups.
Funding
Before adopting the Pebble name, the company operated as Allerta and developed the inPulse smartwatch tailored for BlackBerry devices but struggled to attract conventional venture capital funding after rebranding. To finance their project, Pebble Technology launched a Kickstarter campaign with an initial target of $100,000. Early supporters could pre-purchase a Pebble for $115 ($99 for the first 200 units), which was below the expected retail price of $150. The campaign rapidly exceeded its goal within two hours and became Kickstarter’s highest-funded project at that time by raising over $4.7 million in just six days.
On , Pebble restricted further pre-orders; funding officially closed on , having raised $10,266,845 from 68,929 backers. This achievement set a new world record for the largest amount collected on Kickstarter at that time.
Production
Pebble collaborated with the consulting company Dragon Innovation to establish relationships with suppliers and manufacturers. Once prototype production issues were resolved, large-scale manufacturing commenced in January 2013 through Foxlink Group, initially producing 15,000 units weekly. Although shipments were originally scheduled for September 2012, delays in manufacturing postponed the launch. The first shipments were dispatched on .
By , Pebble had distributed 300,000 units, increasing to over 400,000 by , reaching 450,000 by mid-2014, hitting the one million mark by the end of 2014, and achieving two million units by December 7, 2017. This swift expansion reinforced Pebble’s foothold in the smartwatch industry and facilitated a substantial Series A investment of $15 million from Charles River Ventures in 2013.
Hardware
The device was equipped with a 144 × 168 pixel monochrome memory LCD featuring an ultra low-power transflective display technology produced by Sharp. It included a backlight, vibration motor, magnetometer, ambient light sensors, and a three-axis accelerometer. Connectivity with Android smartphones was enabled via Bluetooth 2.1 initially and later upgraded to Bluetooth 4.0 (Bluetooth Low Energy) using Stonestreet One's Bluetopia+MFi software stack. Support for Bluetooth LE was introduced through a firmware update released in November 2013. Charging utilized a magnetic USB cable adapted to preserve water resistance, providing a battery life of up to seven days. Responding to Kickstarter backers' requests, the watch was designed to be water-resistant up to 5 atm (approximately ), allowing it to be worn while showering, swimming, or diving.
Software
By February 2014, the Pebble app store offered more than 1,000 applications covering notifications for emails, calls, texts, social media updates, stock market quotes, activity monitoring, remote control functions for smartphones and household devices, turn-by-turn navigation via smartphone GPS, RSS/JSON feed reading, and numerous customizable watch faces.
The smartwatch came preloaded with apps such as a cycling tracker that measured speed, distance, and pace through GPS data and a golf rangefinder supporting over 25,000 courses worldwide. CEO Eric Migicovsky committed to delivering regular operating system updates every two to three weeks after launch to finalize feature implementation.
Applications depended on data from paired smartphones for metrics like distance traveled and speed. Additional apps could be installed through mobile devices and were supported by an openly available software development kit (SDK).
Integration with Android and iOS was accomplished via a companion app responsible for managing notifications. Messaging and phone call functionalities were supported alongside various third-party applications.
The watch’s firmware operated on an OS built upon the FreeRTOS kernel and incorporated components such as Newlib, STM32 Peripheral Library, Ragel state machine compiler, and a UTF-8 decoder.
Gadgetbridge offered an open-source Android companion app alternative that required no user account creation while supporting notifications, music control, and application management.
For Linux users, interaction with Pebble devices was possible through libpebble, enabling experimental features on distributions like Maemo. Additionally, Rockwatch was a commercial application providing firmware updates and app management on MeeGo-based Nokia N9 smartphones.
Pebble SDK
Before the initial shipment of its smartwatches, Pebble Technology introduced an open Pebble software development kit (SDK). On April 12, 2013, a proof-of-concept watchface SDK along with accompanying documentation was made available. The first official SDK release, version 1.0, enabled developers to create watch faces, basic applications, and games. Subsequently, version 2.0—renamed PebbleKit and launched on May 17, 2013—introduced two-way communication capabilities between Pebble watches and iOS or Android smartphones through the AppMessage framework.
By early 2015, PebbleKit offered APIs supporting Bluetooth messaging, background workers, accelerometer and compass functionality, with app development primarily in C and limited use of JavaScript. It is important to note that applications developed with PebbleKit 2.0 were incompatible with the earlier 1.x versions, necessitating developers to update their apps for compatibility with the newer firmware.
Reception
The initial Pebble smartwatch garnered mixed critical responses. Its design received commendations for innovation. For example, CNET praised the Pebble Steel for its aesthetic appeal, screen clarity, and water resistance; however, it also pointed out drawbacks such as a maximum of eight user-installed apps and the absence of a heart rate sensor. Subsequent Pebble models were regarded as straightforward and functional but lacked some features present in rivals like the Apple Watch. While iFixit raised some concerns regarding build quality and device reliability, they also acknowledged the watch’s ease of repair.
Pebble Time
On February 24, 2015, Pebble unveiled its second-generation smartwatch—the Pebble Time—through a crowdfunding campaign on Kickstarter.
The Pebble Time Steel version features a stainless steel construction available in silver, black, or gold finishes and offers options for leather or metal bands. The company claims this model provides up to a 10-day battery life.
The Pebble Time Round is characterized by its stainless steel case and 2.5d Gorilla Glass screen available in five different finishes. Although its form factor results in a shorter battery life of approximately two days, it still surpasses the Apple Watch’s typical 16-hour endurance.
Hardware
This generation introduced a 64-color e-paper display protected by Gorilla Glass within a slimmer ergonomic frame featuring a plastic enclosure and built-in microphone. It maintains the previous models’ seven-day battery life and water resistance, powered by a 150mAh battery.
Pebble also launched "Smartstraps," an open hardware initiative allowing third-party manufacturers to create watch bands that add functionalities such as GPS tracking, heart rate monitoring, or extended battery capacity through a dedicated connector. This modular design helps avoid the bulkiness seen in many competing smartwatches.
Software
The Pebble Time debuted with a timeline-oriented user interface inspired by systems like Google Now on Android Wear. A firmware update released in December 2015 expanded timeline functionality to all Pebble devices and eliminated the previous limit of eight apps installed simultaneously. This update enabled users to access more applications loaded from paired phones while preserving backward compatibility.
Developers created various third-party applications for Pebble Time, including contactless payment solutions enabling tap-to-pay functionality.
Funding and records
Priced at $199 at launch, the Pebble Time campaign quickly achieved its initial Kickstarter funding target of $500,000 within just 17 minutes and reached $1 million after 49 minutes—setting new records on the platform. Within 48 hours, funding surpassed $10.3 million, breaking additional Kickstarter milestones. By March 3, 2015, with nearly three weeks remaining in the campaign, Pebble Time became Kickstarter’s most funded project ever with close to $14 million pledged. The campaign concluded on March 27, 2015, having raised a total of $20,338,986 from 78,471 backers.
Pebble 2
The third iteration of the company's smartwatch, Pebble 2, was introduced via Kickstarter on May 24, 2016, offering early backers a discounted rate with deliveries anticipated between October and November of the same year. This model incorporated new capabilities such as a heart rate sensor (available on +HR variants), a built-in microphone, and water resistance rated up to 30 meters—slightly reduced by 10 meters compared to the original due to the addition of the microphone. Alongside Pebble 2, the Kickstarter campaign also unveiled the Pebble Core, a compact wearable device powered by Android 5.0, equipped with a 3G modem, GPS functionality, and Spotify integration, supported by an active open-source developer community.
Pebble 2 officially hit the market in September 2016 at a price point of $129, featuring design enhancements and improved functionality. Following Pebble’s partial acquisition by Fitbit in late 2016, the company encountered backlash for raising $12.8 million through Kickstarter while delaying product shipments by half a year without adequate updates. Backers who had not yet received their devices were slated to be reimbursed in 2017.
Closing of Pebble
Pebble Technology declared insolvency on December 7, 2016, with Fitbit acquiring a significant portion of its assets along with some staff members. The transaction, facilitated by Charles River Ventures—which had invested $15 million in Pebble back in 2013—transferred ownership of the Pebble brand to Fitbit. However, Fitbit’s acquisition focused primarily on software personnel, quality assurance teams, and intellectual property assets such as Pebble OS, watch applications, cloud infrastructure, and patents rather than hardware components.
A post dated December 14, 2016 on the Pebble Developer Blog detailed the transition process and initiatives aimed at enhancing the autonomy of Pebble OS along with its watchfaces and applications.
Fitbit paid $23 million for Pebble’s intellectual property despite the company's outstanding debts surpassing that figure; Fitbit did not take on these liabilities. Other remaining assets including product stock and server hardware were liquidated separately. After this acquisition, Pebble’s physical offices were shuttered and control over the Pebble brand transferred entirely to Fitbit. Former Pebble engineers were integrated into Fitbit’s San Francisco offices. Consequently, shipments for the Pebble 2, Time 2, and Core smartwatches were canceled and Kickstarter supporters received refunds.
Rebble
Rebble is an unofficial developer collective established to sustain online services for Pebble watches after their discontinuation on June 30, 2018. Formed by dedicated Pebble users in December 2016 following the company’s closure announcement, Rebble provides an alternative web platform that enables users to regain access to essential functionalities. Certain features such as weather updates and voice dictation require a subscription fee of $3 per month to support ongoing service maintenance.
Open-source
On January 27, 2025, Google released the source code for PebbleOS as open-source software. Subsequently, founder Eric Migicovsky announced new device models on February 3, 2025. On March 18, two smartwatches were introduced under the Core Devices brand: the Core 2 Duo featuring a 1.2-inch monochrome e-paper display inspired by Pebble 2’s design; and the Core Time 2 boasting a larger 1.5-inch color e-paper touchscreen encased in metal with an integrated heart rate monitor. Both models include step counting capabilities, IPX8-rated water resistance, and battery life lasting up to thirty days. Core Devices later reacquired rights to the Pebble trademark and rebranded these watches as Pebble 2 Duo and Pebble Time 2*.