Comparison

Mos Speedrun vs Chase The Monster

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

Head to head
About

Mos Speedrun

Experience fast-paced retro platforming with 25 challenging stages. Jump, dodge, and race through levels, discover secrets, collect items, and compete for the best speed-run times. Unlock costumes and enjoy a vibrant chip tune soundtrack.

Highlights
  • 25 retro platforming stages
  • Secret areas and collectibles
  • Speed-run time challenges
  • Unlockable costumes
  • Video recording and exporting
  • Game Center leaderboards and achievements
Features
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“don’t hesitate to give Mos Speedrun a try.” - Touch Arcade (4.5/5) “pick this one up with confidence.” - slidetoplay.com ( 4/4 MUST HAVE! ) “an instant classic, refuelling our primal gaming needs.” - TouchGen ( 4/5 Editors Choice! ) "it's one of those games you'll find yourself continuously playing." - gamezebo.com "Fans of tough platformers .. should jump on this deal immediately." - gamepro.com (9/10) "a compulsive race against yourself" - pocketgamer.co.uk (8/10) "Mos Speedrun is a must-have title and one of the freshest experiences currently on Apple devices." - Daily Record (4/5) Jump, dodge and race Mos through 25 glorious stages of fast paced retro platforming action! With exceptionally clever level design, gorgeous pixellated graphics and solid platform dynamics you'll want to keep playing and playing. Find secret areas, collect the spooky hidden skulls, grab every coin, and, once you get fast, you can try to beat the speed-run time! There really is something for all skill levels, from casual to hard-core gamers. There are 12 cool costumes to unlock throughout the game, see if you can find every spooky ghost and you'll get a new costume for each one. And there's loads more! We have been adding new features regularly ever since we released the game, awesome features like video recording and exporting, game centre scoreboards, lots of achievements, web levels you can download to the game, random twitter taunts, dynamic costumes, and things we can't even remember but were probably awesome! Oh yeah, the amazing chip tune soundtrack will make you weep pixels! This is a universal app for iPhone and iPad. Bargain! RELIVE the golden age of 8 bit graphics and chip tunes! DIE a lot, and be accompanied through the level by hoards of replay ghosts! FIND secret online levels on your favourite web sites! USE the easy to master 2 button control system or classic onscreen d-pad. BE THE BEST on the game center scoreboards, and rack up achievements! RECORD your best speedruns and upload them for the world to see! FIND the secret ghosts to unlock new costumes! Thank you to all our fans for your support, ratings and great reviews. If you enjoy the game please rate us on the Appstore, it really helps us out! follow us online: twitter.com/physmo www.physmo.com

About

Chase The Monster

Embark on a thrilling run and jump adventure to rescue a kidnapped princess. Dodge traps, leap over pitfalls, and engage in exciting boss battles by stomping on enemies. Collect coins to earn extra lives and achieve victory.

Highlights
  • Run and jump gameplay
  • Dodge traps and obstacles
  • Leap over pitfalls
  • Boss fights
  • Stomp monsters
  • Collect coins for extra lives
Features
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Quick to play, a run & jump action game! Your quest begins to rescue the kidnapped princess. Run to catch up with the monster horde and dodge traps and obstacles. Jump at the right time to leap over pitfalls. Boss fights turn into a thrilling chase. Run, dodge obstacles, and stomp the boss to win. How to Play: - Tap to jump, hold to perform a high jump - Avoid traps and pitfalls with precise timing - Stomp monsters to defeat them Rules: - Touching an obstacle, enemy, or falling into a pit means failure - When your lives reach 0, it’s game over - Collect 100 coins to gain an extra life!

Screenshots

Mos Speedrun4 screens
Chase The Monster4 screens

Verdict

The call

The clearest difference is price: Chase The Monster at Free against Mos Speedrun's $0.99. Mos Speedrun's advantage is ads (none vs shown) and update cadence (every 2 months vs every 24 months). On review sentiment, 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

Chase The Monster is free to download; Mos Speedrun costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Mos Speedrun ships an update every 2 months, Chase The Monster every 24 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Mos Speedrun versus Chase The Monster: the parameters behind the verdict, then further details
ParameterMos SpeedrunChase The Monster
Price$0.99Free — better
Rating4.7 (33 ratings) — better—
Positive reviews93.3% of reviews100.0% of reviews — better
Number of ratings33 — better—
Update frequencyEvery 2 months — betterEvery 24 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better13.0
Further details — not scored
Size46 MB66 MB
Age rating9+9+
DeveloperPhysmoYoshitaka Nagashima

Customer experience

Mos Speedrun

All ratings33 ratings
Positive90.9%
Neutral6.1%
Negative3.0%
Written reviews493 reviews
Positive93.3%
Neutral4.5%
Negative2.2%

Chase The Monster

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Mos Speedrun

Reported bugs

2 issues
  • iPhone 5 screen support issues
  • Inconsistent jump responsiveness

Requested features

4 requests
  • More level variety
  • Additional music tracks
  • Checkpoint system
  • Ability to view past speedrun records

Chase The Monster

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Mos Speedrun

No in-app purchases

None

Chase The Monster

No in-app purchases

Questions

Is Mos Speedrun free?
Mos Speedrun costs $0.99, with no in-app purchases.
Is Chase The Monster free?
Chase The Monster is free to download, with no in-app purchases.
Do Mos Speedrun or Chase The Monster have ads?
Chase The Monster shows ads; Mos Speedrun does not.
Which is updated more often, Mos Speedrun or Chase The Monster?
Mos Speedrun ships an update every 2 months, and Chase The Monster every 24 months. Most recently, Mos Speedrun was updated on November 1, 2026 and Chase The Monster on November 3, 2026.

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