Comparison

Red vs Grayflag

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Red

Features
Read full description

Using 25 questions inspired by real relationship red flags, the Red-Flags quiz app uses a sophisticated algorithm to determine how cautious you may want to be about pursuing a relationship with your new partner. Red-Flags helps to provide a unique perspective on whether your partner's behaviours and values, such as how they relate to you and others, is symptomatic of a toxic personality or nothing to be concerned about. Red-Flags allows you to save quiz results for up to 20 partners, allowing you to go back and review your past partners, compare them to new partners, and identify patterns in your dating behaviour. Disclaimer: Red-Flags is meant for entertainment purposes only, and should not be used or taken as professional relationship advice.

About

Grayflag

Features
Read full description

Something feels off? See it clearly. Grayflag is your AI relationship check. Describe what happened or add screenshots of your own chats, and see if it looks like a green, gray or red flag, why, and what to do next. Choose a check: loyalty, red flag, situation, relationship, chat scanner, or the green or red flag quiz. Ask Grayflag follow-up questions, and keep notes and results in your private Vault. Results are AI estimates based only on what you share, never a verdict about anyone. Grayflag never accesses another person's phone, accounts or messages, and your content is encrypted. Grayflag Pro unlocks your results and every feature. Choose a subscription; it renews automatically unless canceled in your Apple Account settings. Privacy Policy: https://grayflag.app/privacy Terms of Use: https://grayflag.app/terms Questions, bugs? https://grayflag.app/support

Screenshots

Red4 screens
Grayflag4 screens

Verdict

The call

The clearest difference is in-app purchases: Red at none against Grayflag's 9. Grayflag's advantage is update cadence (every 4 days vs every 33 months). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Grayflag sells 9 in-app purchases, starting at $2.99 per 7 days. Red asks for nothing beyond the download.

UpkeepUpdate frequency

Red ships an update every 33 months, Grayflag every 4 days. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.

Scorecard2 real differences ยท 4 level
Red versus Grayflag: the parameters behind the verdict, then further details
ParameterRedGrayflag
PriceFreeFree
Update frequencyEvery 33 monthsEvery 4 days โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS16 โ€” better17.0
Further details โ€” not scored
Size3 MB79 MB
Age rating9+17+
DeveloperJAKE HUGO GORDONLouis Hubert Cottineau

In-app purchases

None

Red

No in-app purchases

9 purchases

Grayflag

Subscriptions9
  • Grayflag Pro$2.997 Days
  • Grayflag Pro7 Days trial$2.997 Days
  • Grayflag Pro$7.997 Days
Show 6 more
  • Grayflag Pro3 Days trial$11.997 Days
  • Grayflag Pro7 Days trial$11.997 Days
  • Grayflag Pro 3 months$21.993 Months
  • Grayflag Pro annual$24.991 Year
  • Grayflag Pro annual3 Days trial$49.991 Year
  • Grayflag Pro annual$59.991 Year

Questions

Is Red free?
Red is free to download, with no in-app purchases.
Is Grayflag free?
Grayflag is free to download, with in-app purchases available.
Do Red or Grayflag have ads?
Neither Red nor Grayflag shows ads.
Which is updated more often, Red or Grayflag?
Red ships an update every 33 months, and Grayflag every 4 days. Most recently, Red was updated on November 3, 2026 and Grayflag on November 9, 2026.

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