99 Problems vs Monster Challenge!
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
99 Problems
Navigate a minimalist world through 99 challenging levels. Evade obstacles and wall-jump your way to victory in this addictive hardcore game. Experience a seamless stream of challenges designed for maximum fun.
- 99 challenging levels
- Minimalist design
- Obstacle evasion
- Wall-jumping mechanics
- Hardcore fun
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~ 2016 Mega Update ~ Dash your way through 99 challenging levels in this minimalist masterpiece of hardcore fun! Navigate a seamless stream of obstacles by evading and wall-jumping your way to the next checkpoint. "Very hard, super fun, extremely addictive!"
Monster Challenge!
Embark on an engaging gaming adventure with numerous levels designed to help you relax and de-stress. Experience a fun and immersive world that offers a great escape from daily pressures.
- Multiple game levels
- Stress relief
- Escape gameplay
- Immersive experience
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Join interesting game with many levels will help you feel free and break all stress.
Screenshots
Verdict
The clearest difference is in-app purchases: Monster Challenge! at none against 99 Problems's 1. Monster Challenge! also leads on ratings volume (10K vs 38) and update cadence (every 3 weeks vs every 3 months). 99 Problems's advantage is ads (none vs shown) and review sentiment (74% vs 56%). On price, rating 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. 99 Problems sells 1 one-off in-app purchase. Monster Challenge! asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.3 for 99 Problems against 4.4 for Monster Challenge!. That said, the two scores are not equally well evidenced: Monster Challenge! has 10K ratings behind it against 38, so its average is the more settled of the two. Written reviews are what separate them: 74% of 99 Problems's written reviews are positive against 56% of Monster Challenge!'s.
99 Problems ships an update every 3 months, Monster Challenge! every 3 weeks. The most recent releases landed on September 7, 2026 and September 22, 2026 respectively.
| Parameter | 99 Problems | Monster Challenge! |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (38 ratings) | 4.4 (10K ratings) — better |
| Positive reviews | 74.2% of reviews — better | 55.6% of reviews |
| Number of ratings | 38 | 10K — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 6.1 — better | 12.4 |
| Further details — not scored | ||
| Size | 24 MB | 225 MB |
| Age rating | 4+ | 12+ |
| Developer | Mamau ApS | Loi Le |
Customer experience
99 Problems
Monster Challenge!
Bugs and requests
99 Problems
Not enough reviews yet to summarise bugs or requests.
Monster Challenge!
Reported bugs
2 issues- Crashes on older devices
- Unlocking issues
Requested features
3 requests- Remove ads
- Improve tutorial
- Add more levels
In-app purchases
99 Problems
- Remove Ads$0.99
Monster Challenge!
No in-app purchases
Questions
Is 99 Problems free?
Is Monster Challenge! free?
Which has better reviews, 99 Problems or Monster Challenge!?
Do 99 Problems or Monster Challenge! have ads?
Which is updated more often, 99 Problems or Monster Challenge!?
Other comparisons
