# NineGaps vs Sequence

The clearest difference is rating: Sequence at 5.0 against NineGaps's 4.1. Sequence also leads on update cadence (every 3 months vs every 26 months). NineGaps's advantage is in-app purchases (none vs 2) and iOS requirement (10.3 vs 17.6). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Sequence sells 2 one-off in-app purchases. NineGaps asks for nothing beyond the download.

Sequence holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 11 and 4 respectively.

NineGaps ships an update every 26 months, Sequence every 3 months. The most recent releases landed on October 4, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | NineGaps | Sequence |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (11 ratings)](https://appshunter.io/ios/app/ninegaps/id317223443/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/sequence-a-memory-challenge/id1609878481/reviews)** |
| Number of ratings | **11** | 4 |
| Positive reviews | 88.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 3 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 72 MB | 1 MB |
| Requires iOS | **10.3** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Quadion Technologies LLC](https://appshunter.io/developer/317223446) | [Dustin Wiens](https://appshunter.io/developer/1495273178) |

## What reviewers say

### NineGaps

[App page](https://appshunter.io/ios/app/ninegaps/id317223443)

This is a challenging puzzle game where you place numbers 1-9 into gaps, matching operations. It offers a unique twist on number puzzles with multiple difficulty levels and endless replayability.

**Highlights:** Unique puzzle gameplay, Cute graphics, 5 difficulty levels, Unlimited puzzles, Leaderboards and achievements, GameCenter integration

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🧠 Excellent brain training and mental math improvement
- 🎮 Simple yet challenging gameplay mechanics
- 🎨 Clean, polished, and attractive visual design
- ⏱️ Quick games perfect for short waiting periods
- 👨‍👩‍👧‍👦 Suitable for multiple age groups and skill levels

**What reviewers complain about**

- 🔊 Loud sound effects that cannot be controlled properly
- 💾 No game saving feature when closing app
- 🧮 Does not follow proper order of operations (PEMDAS)
- 🔴 Occasional crashes or app not opening
- 🎮 Limited replay value after extended play

**Reported bugs**

- Sound effects stop working intermittently
- App crashes or fails to open on launch
- Sound volume settings not saving between sessions
- OpenFeint achievements not awarding properly
- Mathematical calculation errors in some puzzles

**Requested features**

- Solution/reveal button to show answers when stuck
- Hint system for difficult puzzles
- Game auto-save functionality
- Persistent sound settings across sessions
- Global leaderboards for competition


### Sequence

[App page](https://appshunter.io/ios/app/sequence-a-memory-challenge/id1609878481)

Test your memory by tapping numbered tiles in the correct order. Choose from various difficulty levels, grid sizes, and game modes to challenge yourself. See how long you can last in the infinite mode.

**Highlights:** Memorize numbered tile sequences, Tap tiles in correct order, Multiple difficulty levels, Variable grid sizes, Sequential number mode, Non-sequential number mode, Multiples of 2 mode, Infinite mode

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Non-Consecutive Game | $0.99 | one-time |
| Multiples of 2 | $0.99 | one-time |


## Frequently asked questions

### Is NineGaps free?

NineGaps is free to download, with no in-app purchases.

### Is Sequence free?

Sequence is free to download, with in-app purchases available.

### Which has better reviews, NineGaps or Sequence?

Sequence is rated higher. NineGaps averages 4.1 out of 5 from 11 ratings, while Sequence averages 5.0 from 4 ratings.

### Do NineGaps or Sequence have ads?

Neither NineGaps nor Sequence shows ads.

### Which is updated more often, NineGaps or Sequence?

NineGaps ships an update every 26 months, and Sequence every 3 months. Most recently, NineGaps was updated on October 4, 2026 and Sequence on October 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*