Comparison

ChessFlex vs Chess Openings Coach

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

Head to head
About

ChessFlex

Play chess with friends or AI without accounts or servers. Features a FIDE-formula rating system and asynchronous play. Offers an optional one-time unlock for in-depth game analysis and coaching.

Highlights
  • Play with friends via QR code or iMessage
  • Human-like AI bots with adjustable ELO
  • FIDE-formula rating system
  • Asynchronous and timed game modes
  • No chat, only chess notation
  • Private by design, no accounts or tracking
  • Optional game analysis and coaching unlock
Features
Read full description

ChessFlex is chess stripped back to the game. No accounts, no servers, no chat — just the board, the friends you choose, and a real rating that's yours. PLAY YOUR CIRCLE Connect by trading a QR code, in person or over iMessage. No global matchmaking, no strangers, no friend requests. The people across the board are people you picked. HUMANS — OR HUMAN-LIKE BOTS Five built-in bots from 400 to 2000 ELO play like real people at that level: they make human mistakes, not random ones. A real game and a real rating from your very first move. And when you've beaten them all, there's King — our own engine at full strength, and not human-like at all. FIDE-FORMULA RATING Every game updates your rating with the standard FIDE formula. It's your history, not your ceiling — anyone can challenge anyone, and a 1200 taking on a 2000 is courage, not a mistake. PLAY AT YOUR PACE Async by default — make a move, put your phone away, pick it up hours later. Or set a clock: Blitz, Rapid, Classical, or multi-day correspondence. THE BOARD IS THE CONVERSATION There's no chat box, ever. Players speak only in standard chess annotation symbols — !! for a brilliant move, ? for a mistake. Nothing personal can be exchanged, so there's nothing to moderate, and it's cross-language by default. PRIVATE BY DESIGN No email, no sign-up, no tracking, no ads. Your identity is your device; your games live on your device and travel only between you and your opponent. CHESSFLEX STUDY (optional) A one-time unlock that turns every game into a lesson: move-by-move analysis, win-chance insight in plain language, guided openings, and practice positions. Scan a chess diagram from a screenshot and play it out, or have the coach read its suggested line aloud. Playing, ratings, and opening names stay free, always. From Labham LLC. A sibling to LexFlex.

About

Chess Openings Coach

Features
Read full description

ChessOpenings is a quiet, well-written reference for the classical chess opening repertoire — Ruy Lopez, Sicilian, Queen's Gambit, King's Indian, and 21 more — with an AI coach for the specific positions you get stuck in. WHAT IT DOES • 25 classical openings grouped by structure (Open Games, Semi-Open, Closed, Indian Defences, Flank) • Each opening: ECO code, main line, key strategic ideas, main variations with explanations, common traps, suitability ("Players who like long strategic battles") • AI coach answers specific "what should I do if my opponent plays X?" questions in the Silman / Rowson / King tradition • Private practice log — every session logged with opening, question, AI feedback, your note • 3 free coach asks per day; Pro is unlimited DESIGN Warm walnut-and-cream aesthetic — board-brown and ink on cream, serif typography. Apple-native SwiftUI. No third-party UI frameworks. PRIVACY • Every study note stays on your iPhone with SwiftData • No login, no email, no analytics SDKs • "Data Not Collected" verified in App Privacy • AI coach calls send only the opening name and your question — no identifiers, no logs FREE Browse all 25 openings, every variation + 3 AI coach asks per day + unlimited practice log. PRO ($4.99/month or $19.99/year) • Unlimited AI coach asks WHY CHESSOPENINGS Most chess apps are puzzle-grinders or engine-evaluation tools. ChessOpenings gives you a structured reference for the classical openings — the actual ideas, the actual traps, who they suit — plus a coach who'll explain the move you didn't understand. Built for club players who want to understand why a position works, not just how the engine evaluates it. Built in Australia. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ChessFlex4 screens
Chess Openings Coach4 screens

Verdict

The call

The clearest difference is update cadence: ChessFlex at every 9 days against Chess Openings Coach's every 2 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. ChessFlex sells 1 one-off in-app purchase and Chess Openings Coach sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ChessFlex ships an update every 9 days, Chess Openings Coach every 2 months. The most recent releases landed on October 16, 2026 and October 1, 2026 respectively.

Scorecard1 real difference · 8 level
ChessFlex versus Chess Openings Coach: the parameters behind the verdict, then further details
ParameterChessFlexChess Openings Coach
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 9 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS17.6 — better18.0
Further details — not scored
Size13 MB3 MB
Age rating4+4+
DeveloperLabham LLCMitaanshu Agarwal

In-app purchases

1 purchases

ChessFlex

One-time1
  • ChessFlex Study$7.99
2 purchases

Chess Openings Coach

Subscriptions2
  • Chess Openings Coach Pro Monthly7 Days trial$4.991 Month
  • Chess Openings Coach Pro Yearly7 Days trial$24.901 Year

Questions

Is ChessFlex free?
ChessFlex is free to download, with in-app purchases available.
Is Chess Openings Coach free?
Chess Openings Coach is free to download, with in-app purchases available.
Do ChessFlex or Chess Openings Coach have ads?
Neither ChessFlex nor Chess Openings Coach shows ads.
Which is updated more often, ChessFlex or Chess Openings Coach?
ChessFlex ships an update every 9 days, and Chess Openings Coach every 2 months. Most recently, ChessFlex was updated on October 16, 2026 and Chess Openings Coach on October 1, 2026.

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