Comparison

Project Solitaire vs OK Solitaire

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

Head to head
About

Project Solitaire

Features
Read full description

Ad free & battery saving solitaire game!

About

OK Solitaire

A classic Klondike solitaire game redesigned for one-handed play on mobile. Features intuitive card handling, multiple play modes, and an 'Insight' mode to analyze game states. Enjoy a clean, ad-free experience with optional themes and features via subscription.

Highlights
  • One-handed vertical play
  • Intuitive card selection and movement
  • Undo and auto-flip options
  • Standard, Daily Challenge, and Only Wins modes
  • Insight mode for game analysis
  • Offline play
  • Game Center leaderboards
Features
Read full description

Klondike solitaire, rebuilt – the game is the one you know, everything around it is new. BUILT FOR ONE HAND Solitaire was designed for a table, and most apps still deal it that way – seven columns crushed across the width of a phone. OK Solitaire runs vertically up the screen instead, so every pile sits in comfortable reach of your thumb. Set it up for the left hand or the right. Switch to the squished horizontal version if you really want. PICK UP A RUN, OR PART OF ONE Touch a card and you lift the whole run beneath it. Keep holding and you can dive into the stack, scrubbing down to take a shorter run instead – no pinpoint tapping at a half-covered corner. Double-tap anything that can go home, and it goes. IT KEEPS UP WITH YOU Undo runs all the way back to the deal. Auto-flip turns the cards you were only going to turn yourself. Once a hand is mathematically decided, a FINISH button appears and plays it out, so you never sit clicking through a foregone conclusion. Every action has its own haptic – the lift, the drop, the draw, the win. NOTHING IN THE WAY No ads. No account. No pop-ups between hands, no currencies, nothing nagging you. Three themes, including a true black for OLED, and a board that fills the screen. THREE WAYS TO PLAY Standard Play – Klondike as it comes. One-card or three-card draw, wins and losses alike. Daily Challenge – one deal a day, the same one for everyone, and always winnable. Finish it and your time goes on the leaderboard. Only Wins – every deal winnable before you see it, for when you want the game without the dead ends. INSIGHT Stuck, and not sure whether it is you or the deal? With INSIGHT mode, you'll know whether the deal was ever winnable, whether it still is, and – if you have played into a dead end – how far back to rewind to the last position that still had a win in it. Game Center leaderboards for best time, games won, and the daily. Plays entirely offline. SUBSCRIPTION The extras – the Colorful and Dark themes, and INSIGHT mode – are available as a yearly auto-renewing subscription or as a one-time purchase. The subscription renews automatically unless cancelled at least 24 hours before the current period ends, and can be managed or cancelled in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.aeliox.com/apps/OKSolitaire/privacy-policy OK Solitaire is a complete rebuild of an app first released in 2014. Same game, reworked.

Screenshots

Project Solitaire3 screens
OK Solitaire4 screens

Verdict

The call

The clearest difference is in-app purchases: Project Solitaire at none against OK Solitaire's 2. OK Solitaire's advantage is update cadence (daily vs every 9 days). On price, ads, device support and iOS requirement 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. OK Solitaire sells 2 in-app purchases, starting at $9.99 per year. Project Solitaire asks for nothing beyond the download.

UpkeepUpdate frequency

Project Solitaire ships an update every 9 days, OK Solitaire daily. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

Scorecard2 real differences · 8 level
Project Solitaire versus OK Solitaire: the parameters behind the verdict, then further details
ParameterProject SolitaireOK Solitaire
PriceFreeFree
Rating—4.3 (6 ratings) — better
Positive reviews—50.0% of reviews
Number of ratings—6 — better
Update frequencyEvery 9 daysDaily — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhoneiPhone
Requires iOS17.0 — better18.0
Further details — not scored
Size1 MB3 MB
Age rating4+4+
DeveloperAYSE AKSAKALaeliox

In-app purchases

None

Project Solitaire

No in-app purchases

2 purchases

OK Solitaire

Subscriptions1
  • OK Solitaire Full$9.991 Year
One-time1
  • Unlock for life$29.99

Questions

Is Project Solitaire free?
Project Solitaire is free to download, with no in-app purchases.
Is OK Solitaire free?
OK Solitaire is free to download, with in-app purchases available.
Do Project Solitaire or OK Solitaire have ads?
Neither Project Solitaire nor OK Solitaire shows ads.
Which is updated more often, Project Solitaire or OK Solitaire?
Project Solitaire ships an update every 9 days, and OK Solitaire daily. Most recently, Project Solitaire was updated on October 28, 2026 and OK Solitaire on October 29, 2026.

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