Flashlight vs QuaternionCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flashlight
This utility app provides an immediate and bright flashlight experience. It also features a large, easy-to-read clock, making it ideal for nightstand use. Control the light remotely from a smartwatch.
- Instant flashlight activation
- Bright LED illumination
- Large clock display
- Remote watch control
- Simple controls
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Doesn't get much better than this app! Easy-to-use and convenient flashlight that turns on immediately upon launching the app. With an all black background and large clock, this app makes the perfect addition to your nightstand. The best, fastest, and brightest flashlight available! Turn you iPhone into a handy light in the darkness! Features: + Remote control your phone's LED from your watch + Simple and tasteful controls + Uses the LED for powerful illumination + Launches with light on for the fastest light turn on possible + Conveniently displays local time + Large Clock, perfect for night time use Disclaimer: Continued use of the flashlight may dramatically decrease battery life.
QuaternionCalc
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Performs quaternion operations. Includes operations are quaternion transpose, quaternion multiplication, forward transformations, reverse transformations, conversion from quaternion to Euler angles and generation a quaternion from two unit vectors.
Screenshots
Verdict
The clearest difference is price: Flashlight at Free against QuaternionCalc's $2.99. Flashlight also leads on update cadence (every 3 months vs every 15 months) and iOS requirement (15.0 vs 18.0). QuaternionCalc's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Flashlight is free to download; QuaternionCalc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Flashlight ships an update every 3 months, QuaternionCalc every 15 months. The most recent releases landed on October 18, 2026 and September 27, 2026 respectively.
| Parameter | Flashlight | QuaternionCalc |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.9 (99K ratings) — better | — |
| Positive reviews | 90.3% of reviews | — |
| Number of ratings | 99K — better | — |
| Update frequency | Every 3 months — better | Every 15 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 47 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Tim O's Studios, LLC | Princeton Satellite Systems |
Bugs and requests
Flashlight
Reported bugs
2 issues- Ads block use of the flashlight
- Flashlight doesn't work when phone is off
Requested features
3 requests- Customizable brightness settings
- Option to disable automatic light on app open
- Color changing light modes
QuaternionCalc
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Flashlight
No in-app purchases
QuaternionCalc
No in-app purchases
Questions
Is Flashlight free?
Is QuaternionCalc free?
Do Flashlight or QuaternionCalc have ads?
Which is updated more often, Flashlight or QuaternionCalc?
Other comparisons
