Random Timer vs BRAIN!
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Random Timer
This app provides customizable timers for various training activities, including sprints, shadow boxing, and agility drills. Users can set time intervals, choose signal types, select sounds, and even use custom voice signals for solo workouts.
- Customizable time settings
- Choice of signal types
- Selectable sound options
- Add favorite words as signals
- Ideal for solo training
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Lets use for a dash, training of a shadow, or training of quick power and instantaneous power. Lets use as a signal when training alone. ・A setup of time can be performed. ・The kind of signal can be chosen. ・The kind of sound can be chosen. ・You can use to signal the favorite words. ーーーーーーーーーーーーーーーーーーーーーーーーーーーー ダッシュやシャドー,ペイントボールのトレーニング、または俊敏力、瞬発力のトレーニングに使ってみましょう。 一人でトレーニングする時の合図として利用しましょう。 ・時間設定ができるよ。 ・合図の種類が選べるよ。 ・音の種類が選べるよ。 ・好きな言葉を合図に追加できるよ。
BRAIN!
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BRAIN! is an app that helps you evaluate and track your brain’s condition. When you’re struggling to concentrate or feeling mentally foggy, BRAIN! allows you to quantify your cognitive state. It measures four key indicators: ・Focus (SART) ・Cognitive control (Stroop task) ・Working memory (n-back task) ・Processing speed (TMT) Easy to use — each test takes less than 5 minutes. Your scores are automatically saved and visualized in graphs to track changes over time. Ideal for checking your mental condition before and after work or study, or monitoring the effects of sleep and nutrition. Also great for peak performance and recovery planning. Your brain deserves conditioning, too. Start visualizing your cognitive power with BRAIN!
Screenshots
Verdict
The clearest difference is update cadence: BRAIN! at daily against Random Timer's every 7 months. Random Timer's advantage is iOS requirement (5.1.1 vs 12.0). On price, ads, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Random Timer ships an update every 7 months, BRAIN! daily. The most recent releases landed on June 9, 2026 and September 6, 2026 respectively.
| Parameter | Random Timer | BRAIN! |
|---|---|---|
| Price | Free | Free |
| Rating | 1.7 (17 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 17 — better | — |
| Update frequency | Every 7 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 5.1.1 — better | 12.0 |
| Further details — not scored | ||
| Size | 9 MB | 104 MB |
| Age rating | 4+ | 4+ |
| Developer | 2ka | TNQ Tech, Co. |
In-app purchases
Random Timer
No in-app purchases
BRAIN!
No in-app purchases
