67 vs Synth Sum
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
67
Navigate a block through challenging grid-based puzzles by swiping. Overcome obstacles, collect stars, and utilize power-ups to reach the target. Earn coins to spend on helpful items in this engaging game.
- 1000+ Progressive Levels
- Star Rating System
- Power-Ups (Bombs, Undo, Skip)
- Coin Economy
- Beautiful UI & Animations
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Slide to Slide is a challenging puzzle game where players swipe to slide a block across a grid, navigating around obstacles to reach the target position. Features include: - 1000+ Progressive Levels - Hand-crafted tutorials + seeded procedural generation - Star Rating System - 1-3 stars based on optimal swipe count - Power-Ups - Bombs to remove obstacles, undo moves, skip levels - Coin Economy - Earn coins by completing levels, spend on power-ups - Ad-Supported - Free-to-play model with banner, interstitial, and rewarded ads - Beautiful UI - Glossy 3D UI aesthetic with smooth animations
Synth Sum
A neon rhythm dash game where players tap to jump over obstacles and collect numbers. The goal is to hit the exact sum to pass through doors and progress through levels. Features include multiple worlds, practice modes, and leaderboards.
- Tap to jump
- Hit exact sum to clear doors
- 16 levels across five worlds
- Practice with checkpoints
- Endless and Daily modes
- Earn stars for skins
- Game Center leaderboards
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Jump the spikes. Hit the exact sum. Neon rhythm dash. Grab the numbers that fit. Make the exact sum - or start over. • Tap to jump through spikes, pads, and rings • Hit the exact sum to clear the door • 16 levels across five worlds • Practice with checkpoints • Endless and Daily after you beat Genius • Earn stars for skins - looks only • Game Center leaderboards and achievements No ads. No tracking. No data collected. Jump in. Hit the sum.
Screenshots
Verdict
The clearest difference is in-app purchases: 67 at none against Synth Sum's 5. Synth Sum's advantage is ads (none vs shown) and update cadence (daily vs every 6 days). On price, rating, ratings volume 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. Synth Sum sells 5 one-off in-app purchases. 67 asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for 67 against 5.0 for Synth Sum. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
67 ships an update every 6 days, Synth Sum daily. Both last shipped on October 31, 2026.
| Parameter | 67 | Synth Sum |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 6 days | Daily — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Jonathan Zazove | Matthew Leonard |
In-app purchases
67
No in-app purchases
Synth Sum
- Neon Kit$1.99
- Sunset Kit$1.99
- Magenta Kit$1.99
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- Unlock All Worlds$2.99
- All Kits Bundle$4.99
