Comparison

Time Trap vs Sum Fall

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Time Trap

Embark on a detective adventure in a post-apocalyptic world to uncover the mystery of a missing journalist. Explore 55 realistic scenes, search for vintage hidden objects, and solve puzzles to progress through an engaging sci-fi storyline. Replay scenes for new quests and rewards.

Highlights
  • 55 realistic post-apocalyptic scenes
  • Detective storyline
  • Search for hidden items
  • Solve puzzles
  • Collect vintage objects
  • Replay scenes for rewards
  • Hint system
Features
Read full description

Solve the mystery of the post-apocalyptic world and find out why a journalist was found missing. Perhaps it’s the work of the aliens… The game is TRULY FREE and the whole adventure is open to you without any required purchases - it's entirely up to you to buy optional tools. Features: - 55 realistic post-apocalyptic scenes - Detective storyline, Investigative journalism - 37 challenging game locations: search for hidden items and solve puzzles - Most of the hidden objects are real vintage! - Build your collection. Go through scenes again to try new quests and get new rewards! - A unique system of preview and highlighting hints Adventure will take you on a journey through empty corridors of an abandoned city in a search for the missing person. Come and rescue him from oblivion. Inspect all corners of the fantastic city: every street, every office, every corridor. Unique atmosphere and sci-fi storyline, ambient music and realistic graphics will make your trip to the quarantined zone an unforgettable experience. Each object you’ll find could be a hint. Dive into the world of fantasy! We'll be happy to stay in touch with you at www.facebook.com/CrispApp : leave comments, ask questions and get news about coming games!

About

Sum Fall

Features
Read full description

Sum Fall is the arithmetic puzzle game that plays by its own rules. Place numbered pieces on the grid. Watch them fall — up or down, you never know which way. When two pieces meet and their values add up to 0 or 10, they vanish. Clear them all before the grid overflows. Simple to learn. Fiendishly hard to master. HOW IT WORKS → Each turn, choose where to place a piece in the center row → Pieces fall toward the ceiling or floor — direction is a mystery → Adjacent pieces fuse: green (+) adds, red (−) subtracts → Result is 0 or 10? Both pieces vanish and you score → Chain vanishes for multiplier bonuses: ×1.5 → ×2 → ×3 → ×5 NEW — DAILY CHALLENGE One handcrafted puzzle a day — the same for every player. Clear the board, race the clock, earn up to 3 stars. Keep your streak alive, replay past days from the calendar, and complete a full month to earn a trophy. NEW — DEMOLITION An endless series of solvable puzzle levels. Destroy every golden cell with a limited piece budget. Bombs, armored cells, mystery values, cyclic counters… plan your chains, finish under par, claim all 3 stars. THREE ENDLESS MODES EASY — No pressure. Practice at your own pace. CLASSIC — From turn 10, a new row pushes in. Stay ahead of it. HARDCORE — Both sides push simultaneously. Every move counts. POWER-UPS • Reveal Directions — see where all pieces will fall before committing • Change Direction — flip a piece's trajectory • Change Value — set any piece to the number you need (1–9) • Change Operation — switch + and − to make the math work for you • Storage — hold a piece aside and use it later FEATURES • Daily challenge with streaks, calendar and monthly trophies • Global leaderboards via Game Center • Dark mode • Second chance to keep a great run alive • Offline play — no Wi-Fi needed • Auto-save — resume any game where you left off • Lives system — regenerate over time (infinite in Premium) • No account required • English, French, Spanish, German, Portuguese PREMIUM (OPTIONAL) Remove ads, unlock infinite lives, and get an extra charge for every power-up. One purchase. No subscription. No tricks. Think you can top the leaderboard? Prove it.

Screenshots

Time Trap4 screens
Sum Fall4 screens

Verdict

The call

The clearest difference is update cadence: Sum Fall at every 8 days against Time Trap's every 7 months. On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Time Trap sells 6 one-off in-app purchases and Sum Fall sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Time Trap ships an update every 7 months, Sum Fall every 8 days. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.

Scorecard1 real difference · 9 level
Time Trap versus Sum Fall: the parameters behind the verdict, then further details
ParameterTime TrapSum Fall
PriceFreeFree
Rating4.4 (5.2K ratings) — better—
Positive reviews87.7% of reviews—
Number of ratings5.2K — better—
Update frequencyEvery 7 monthsEvery 8 days — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.413.0 — better
Further details — not scored
Size190 MB26 MB
Age rating12+4+
DeveloperCrisp App StudioAdrien Buot

Bugs and requests

Time Trap

Reported bugs

2 issues
  • Incorrect item names or descriptions
  • Inconsistent object detection and responsiveness

Requested features

3 requests
  • Ability to zoom in and out of scenes
  • More varied and dynamic backgrounds
  • Option to disable ads for a one-time fee

Sum Fall

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Time Trap

One-time6
  • Instant Hint$0.99
  • Preview Hints Pack$0.99
  • Time Machine$0.99
Show 3 more
  • Ads Free$0.99
  • GoldMaster Special$1.99
  • Master Pack: All-included$3.99
1 purchases

Sum Fall

One-time1
  • Remove Ads$3.99

Questions

Is Time Trap free?
Time Trap is free to download, with in-app purchases available.
Is Sum Fall free?
Sum Fall is free to download, with in-app purchases available.
Do Time Trap or Sum Fall have ads?
Both Time Trap and Sum Fall show ads.
Which is updated more often, Time Trap or Sum Fall?
Time Trap ships an update every 7 months, and Sum Fall every 8 days. Most recently, Time Trap was updated on November 3, 2026 and Sum Fall on November 9, 2026.

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