Comparison

Calibre Firmware Updater vs Runflake

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Calibre Firmware Updater

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Keep your Calibreβ„’ device up to date with the latest performance and stability improvements. The Calibre Firmware Updater lets you easily install the latest firmware on your Calibre wearable breath/metabolic tracker.

About

Runflake

Features
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Runflake is a running app that brings your runs together, from today’s pace to your weekly and monthly totals. Track a run, look back at your splits and see how your running changes over time. Your running, week by week See distance, time, run count and average pace by week, month, year or all time. Review the days you ran in a calendar and charts. Filter your run history by date and indoor or outdoor activity. Look closer at each run Review your outdoor GPS route and split pace. Find your longest runs and personal records over 1 km, 5 km and 10 km. Numbers you can read on the move Keep distance, time and pace in view. Turn on voice cues to hear your split every kilometre, or every mile when using miles. Voice cues are in English. A weekly goal that fits Six ways to aim: distance, runs per week, time, weight, calories, or steps. Follow your progress alongside your recorded runs. A week of running with your crew Join a crew with an invite code. See weekly distance and run counts based on the records shared with you. Add a manual entry for a week you did not record in the app. Choose separately whether to share your runs and include your totals in a crew report shared outside the group. Indoor runs, too Record indoor runs alongside outdoor sessions. Indoor distance is estimated from sensors and kept distinct from outdoor GPS records. Saved on your phone Record runs without an internet connection. Outdoor route tracking still needs location permission and GPS reception. Turn it on in settings and a finished run is written to Apple Health, with its route for outdoor runs. Start a run on Apple Watch and check your running numbers on your wrist. As you keep running, review your achievements and ranks. Daily, weekly, monthly and yearly leaderboards cover outdoor GPS runs.

Screenshots

Calibre Firmware Updater4 screens
Runflake4 screens

Verdict

The call

The clearest difference is update cadence: Runflake at every 3 days against Calibre Firmware Updater's every 4 weeks. Calibre Firmware Updater's advantage is iOS requirement (12.0 vs 16.4). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Calibre Firmware Updater ships an update every 4 weeks, Runflake every 3 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard2 real differences Β· 4 level
Calibre Firmware Updater versus Runflake: the parameters behind the verdict, then further details
ParameterCalibre Firmware UpdaterRunflake
PriceFreeFree
Update frequencyEvery 4 weeksEvery 3 days β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod β€” betteriPhone, Apple Watch
Requires iOS12.0 β€” better16.4
Further details β€” not scored
Size12 MB72 MB
Age rating4+4+
DeveloperBreathTaking Tech LLCWorkNPLAY Inc.

In-app purchases

None

Calibre Firmware Updater

No in-app purchases

None

Runflake

No in-app purchases

Questions

Is Calibre Firmware Updater free?
Calibre Firmware Updater is free to download, with no in-app purchases.
Is Runflake free?
Runflake is free to download, with no in-app purchases.
Do Calibre Firmware Updater or Runflake have ads?
Neither Calibre Firmware Updater nor Runflake shows ads.
Which is updated more often, Calibre Firmware Updater or Runflake?
Calibre Firmware Updater ships an update every 4 weeks, and Runflake every 3 days. Most recently, Calibre Firmware Updater was updated on October 25, 2026 and Runflake on October 24, 2026.

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