Netbook vs 90daysChallenge
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Netbook
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Netbook works like a notebook. All your data will be stored on your device. 1. Store your previous networks. 2. See why you saved them. 3. Add image to get them easily
90daysChallenge
This app helps you build lasting habits and improve focus through a structured 90-day challenge. It offers dedicated focus modes for deep work and quick sprints, along with daily reminders and motivational quotes to keep you on track.
- 90-Day Challenge Tracker
- Deep Focus Mode
- Sprint Mode
- Daily Reminders
- Daily Motivation Quotes
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Focus 90 is your dedicated focus training companion, designed to help you build habits that stick. Key Features: 90-Day Challenge Tracker – Visualize your progress and stay on course. Deep Focus Mode – Achieve peak productivity with 90-minute immersive sessions. Sprint Mode – Perfect for a quick 2-minute burst of concentration. Daily Reminders – Personalized alerts to ensure you never miss a day. Daily Motivation – 100 inspiring bilingual (English & Chinese) quotes from legendary athletes. Start your 90-day focus journey today. Master your concentration and achieve your goals!
Screenshots
Verdict
The clearest difference is ads: 90daysChallenge at none against Netbook's shown. Netbook's advantage is update cadence (every 2 days vs every 3 weeks) and iOS requirement (13.4 vs 16.6). On price, 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.
Netbook ships an update every 2 days, 90daysChallenge every 3 weeks. The most recent releases landed on October 15, 2026 and October 21, 2026 respectively.
| Parameter | Netbook | 90daysChallenge |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.0 (1 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 days — better | Every 3 weeks |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.4 — better | 16.6 |
| Further details — not scored | ||
| Size | 30 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | ahmet enes kececi | HSIN JUI YU |
In-app purchases
Netbook
No in-app purchases
90daysChallenge
No in-app purchases
