Random Reminder vs ChoiceField
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Random Reminder
This app helps you achieve deep focus quickly through a unique method involving random sound reminders and short breaks. It's designed to improve attention, memory, and learning performance by leveraging principles like neural replay and ultradian rhythms.
- Random sound interval reminders
- 10-second micro-breaks
- 90-minute focus sessions
- Neural replay for memory
- Variable ratio reinforcement
- Zeigarnik effect utilization
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“Random Reminder” is a new focus method designed to help you enter deep focus quickly. More than 400 people worldwide use it every second. With this method, you can stay focused for up to 90 minutes, improve your attention and memory, and enter a flow state more easily. == A New Focus Method == - Set a sound to play at random intervals (e.g., every 3–5 minutes). - Each time you hear the reminder sound, immediately close your eyes and rest for 10 seconds. - Then return to your work or study and continue focusing. Repeat this process until the 90-minute session ends. - After 90 minutes, take a 20-minute break. == Based on Four Core Principles == ■ Neural Replay During micro-breaks, your brain "replays" recently learned information at high speeds, improving memory retention and learning performance. ■ Variable Ratio Reinforcement Randomized feedback keeps the brain’s dopamine system engaged. Not knowing exactly when the next sound will occur maintains a healthy level of alertness and motivation. ■ Zeigarnik Effect Briefly interrupting a task creates a psychological "open loop." This makes your brain more eager to complete the task, helping you dive back in more effectively. ■ Ultradian Rhythms (90/20 Rule) The human brain naturally operates in 90-minute high-frequency cycles. Following this rhythm prevents burnout and maximizes mental endurance. ====== Personal growth website: https://zeenzeen.com Creator: 择恩 ====== “Random Reminder” can be downloaded and used for free. Core features are completely free. We also offer premium membership features to enhance the user experience. If you choose to subscribe to the premium membership, your iTunes account will be charged accordingly. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current subscription period. After subscribing, you can manage your subscription in your iTunes Store account settings. Privacy Policy https://zeenzeen.com/privacy Terms of Use https://zeenzeen.com/tos End User License Agreement https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
ChoiceField
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You open your phone for one reply, then drift into short videos, games, shopping, empty social feeds or adult sites. Bedtime, study and work are repeatedly broken. This is not a lack of discipline; the digital flood captures attention when we are tired or busy. ChoiceField began here. We do not advocate taking your phone or uninstalling apps. A gentle, clear pause between automatic opening and continued immersion wakes your awareness: the next step is yours. TAKE BACK YOUR CHOICE Choose apps, websites or categories. Set daily allowances or confirmation before each opening. At the system block, leave or approve limited use. Only the target’s actual foreground use counts; leaving pauses it and returning uses the remaining balance. Each selected target has its own rule; members of a category share its allowance. One grant never releases other protected targets. This is no wall-clock countdown. Confirmed use alone reduces the balance. Repeated grants tighten under your saved rules, then require a cooldown; the next day resets them. FREE FOUNDATION Screen Time protection, daily limits, opening confirmation, system blocks, limited use, haptics and optional sounds are free. Local 7/30/90-day reviews, time patterns, rule suggestions and observation help you adjust. FOCUS, SUPPORT AND A BREAK • Now wheel: turn between Monitoring apps, Blocked apps, Limited Use, Pause limits, System diagnostics. Each entry shows its current state, remaining time or diagnostic details, with controls. • Friend Freeze (Pro): a trusted friend locks the limit plan and strategy YOU created, including rule edits and pausing. For urgent needs, request a friend-approved unlock. With both apps installed, use QR codes; otherwise use the official HTTPS page. It supplies a browser-local key generator. Responses are generated and signed there, then manually copied to your app for local verification. This optional page must load online; the app uploads no plans, Screen Time, focus content, records or usage data. Protection and rules stay on-device. • Focus Studio: save work, reading, rest or a small task as reusable actions. Set 5–90-minute timers; pause, resume or finish early. Record text, voice, images and video; review private reports, organize and export. Three sessions without subscribing; unlimited with Pro. After expiry, records stay readable and an active session can finish. • Take a break: open the game from Focus Studio without waiting for the end. Each round draws eight numbered boxes from 80 visual/text designs. Aim or drag to launch colors, layered particles, sound and haptics: stories about time. Your draft and timer remain; limit rules and focus records do not change. • Multilingual website: localized home, support, privacy and terms explain protection and permissions. PROTECT WHAT MATTERS Core time protection (Pro): during periods you set, such as workdays or bedtime, automatically adjust limited-use allowances and reminder intensity using local time. Free reviews reveal habits; Pro puts your saved time plans into practice. Pro’s weekly purpose remains: choose something to protect, rehearse ending, record results and choose one adjustment next week. Review experience without completion pressure. Future on-device AI may help understand your rhythm and build suitable plans, without sending your privacy to the cloud. PRIVACY AND SUBSCRIPTIONS Rules, reviews and focus records stay on this device. Apple Screen Time privacy tokens reveal no messages, videos, products or page content. No account, ads, analytics, cross-app tracking or cloud AI. Monthly and yearly Pro have the same features and renew. The annual seven-day trial requires Apple eligibility. Manage in Apple settings; restore purchases in-app. System protection needs Screen Time permission; callbacks depend on iOS/device state. Self-management, not medical diagnosis or treatment. Terms: https://choicefield.loyalai.top/terms/ Privacy: https://choicefield.loyalai.top/privacy/
Screenshots
Verdict
The clearest difference is update cadence: ChoiceField at every 2 days against Random Reminder's weekly. Random Reminder's advantage is device support (4 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases 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. Random Reminder sells 4 in-app purchases, starting at $2.99 per month and ChoiceField sells 2 in-app purchases, starting at $2.00 per month. Whichever you choose, the download price is not the number that matters.
Random Reminder ships an update weekly, ChoiceField every 2 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | Random Reminder | ChoiceField |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (18 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 18 — better | — |
| Update frequency | Weekly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 43 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | 志高 谢 | 建平 马 |
In-app purchases
Random Reminder
- 月度高级会员$2.991 Month
- 季度高级会员$9.993 Months
- 年度高级会员$24.991 Year
- 违约成本$0.99
ChoiceField
- ChoiceField Pro Monthly$2.001 Month
- ChoiceField Pro Annual7 Days trial$18.001 Year









