Subtract One vs Gun Head Run
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Subtract One
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Do you want to find out how fast your brain is? Are you constantly striving to become better? If the answer is yes for any of these questions, you should download "Subtract One" app. "Subtract One" allows you to see how fast you can think. It will give you a score at the end of the game. You have one minute to calculate as many numbers as possible. At the end of the round, you will be able to see how many points you have. In order to get a point, you need to subtract one from each digit of the given number. For example, "3927" turns into "2816" because you subtracted one from each digit. If you get the number correct, you get a point, and if you get the number wrong, you lose a point. "Subtract One" is an app for you to see how fast you can process numbers. It can be used on iPhone, iPod Touch and iPad. It is simple, easy to use, and very fun. You will have a lot of fun using this app. Main Features ◉ Keeps count of score ◉ Time Limit ◉ User-friendly interface ◉ Easy to use
Gun Head Run
Engage in a simple, free-to-play game that can be enjoyed in short bursts of free time. Experience fantastic gameplay with intuitive touch controls. Perfect for quick entertainment.
- Simple touch controls
- Free to play
- Short play sessions
- Fantastic gameplay experience
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· · · · · · Game Feature · · · · · · · » Simply touch to play game » Can play free » Just play this game on your 10 minutes of free time :) » Feel the fantastic in this game Developer - Best Hyper Casual Game Developer South Korea
Screenshots
Verdict
The clearest difference is in-app purchases: Subtract One at none against Gun Head Run's 1. Subtract One also leads on ads (none vs shown). Gun Head Run's advantage is update cadence (weekly vs every 30 months). On price, device support and iOS requirement 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. Gun Head Run sells 1 one-off in-app purchase. Subtract One asks for nothing beyond the download.
Subtract One ships an update every 30 months, Gun Head Run weekly. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.
| Parameter | Subtract One | Gun Head Run |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.6 (17K ratings) — better |
| Positive reviews | — | 33.2% of reviews |
| Number of ratings | — | 17K — better |
| Update frequency | Every 30 months | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 12.5 |
| Further details — not scored | ||
| Size | 9 MB | 162 MB |
| Age rating | 4+ | 9+ |
| Developer | Duo Pisceses, Inc. | MondayOFF |
Bugs and requests
Subtract One
Not enough reviews yet to summarise bugs or requests.
Gun Head Run
Reported bugs
3 issues- Game crashes on launch
- Ads not working as intended
- Progress not saving properly
Requested features
3 requests- Permanent weapon upgrades
- More diverse gameplay and levels
- Reduced ads or optional ad-free mode
In-app purchases
Subtract One
No in-app purchases
Gun Head Run
- No Ads$2.99
