Zerko vs EVIDENCE
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Zerko
A relaxing puzzle game where you strategically place blocks to make all numbers on the board equal zero. Enjoy a no-pressure experience with calming audio and no in-app purchases or ads.
- Zero-sum number puzzles
- Strategic block placement
- Relaxing gameplay
- No time pressure
- No in-app purchases
- No ads
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Some call it reverse sudoku, while others call it a nullification game, but it's Zerko - a puzzle game filled with shapes, numbers, and a straightforward goal: make every number zero. To achieve this, you need to strategically place blocks of various shapes and values so that the numbers on the board effectively "remove up" to zero. Like all my games, this one too is about relaxation... Just chill. There are no points, no time pressure, no data collection, no in-app purchases, no ads, no nonsense ;) My only hope is that you'll enjoy it and that I'll be able to add new content and levels for you in the future. Relaxing audio by: Marek Koszczyński
EVIDENCE
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She was last seen at 10:08. Her recovered phone took a photo at 03:17. Who had the phone? EVIDENCE: 03:17 is an interactive detective mystery game about a fictional missing-person case. Search Mara Kellan's recovered phone, compare messages, photos, timestamps, locations, files, and voice recordings, and prove what happened. Explore ORBIT OS. Build an Evidence Board, pin key clues, compare photos, reconstruct the timeline, and confirm Conclusions only when the evidence supports them. This isn't a story you simply read. You investigate it. FEATURES • One complete 10-chapter detective case • 89 evidence items to recover and examine • 30 Conclusions to solve across the case • A realistic fictional recovered-phone interface • Messages, photos, documents, recordings, metadata, and hidden files • Evidence Board, Pinned Evidence, Timeline, and Photo Compare tools • Clues designed to be cross-checked across time, location, and source • Three endings based on how you choose to handle the truth • No ads, energy systems, timers, or paid hints Mara Kellan disappeared after a night of conflicting accounts. The recovered phone offers a trail, but every answer raises another question. Which statements can be trusted? Which timestamps matter? Why were certain files hidden, changed, or removed? Follow the evidence, test your assumptions, and decide what the case ultimately means. Play Chapters 1–2 free. Unlock Chapters 3–10, all Conclusions, and all endings with the one-time Full Investigation purchase.
Screenshots
Verdict
The clearest difference is price: EVIDENCE at Free against Zerko's $2.99. EVIDENCE also leads on update cadence (every 5 days vs every 3 weeks). Zerko's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 15.6). On ads 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
EVIDENCE is free to download; Zerko costs $2.99 up front. EVIDENCE sells 1 one-off in-app purchase. Zerko asks for nothing beyond the download.
Zerko ships an update every 3 weeks, EVIDENCE every 5 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.
| Parameter | Zerko | EVIDENCE |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.9 (14 ratings) — better | — |
| Positive reviews | 93.3% of reviews | — |
| Number of ratings | 14 — better | — |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 100 MB | 120 MB |
| Age rating | 4+ | 17+ |
| Developer | Maciej Targoni | Mikola Marchuk |
In-app purchases
Zerko
No in-app purchases
EVIDENCE
- Full Investigation$4.99









