Comparison

Flash 1 vs Relay

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

Head to head
About

Flash 1

Features
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Flash — Messagerie privée instantanée Flash est l'application de messagerie conçue pour rester connecté avec tes proches, en toute simplicité. Messagerie complète Messages texte, vocaux (walkie-talkie), photos, vidéos, notes vidéo circulaires et GIFs — tout en temps réel avec accusés de réception. Appels audio & vidéo Appelle tes contacts directement depuis l'app grâce à la technologie WebRTC. Se Rejoindre Partage ta position en temps réel, fixe un point de rendez-vous et suis la progression de chacun sur la carte avec itinéraire intégré. Toujours connecté Notifications push intelligentes, réponse rapide sans ouvrir l'app, et indicateur de présence en ligne. Rapide & personnel Messages rapides pré-enregistrés, avatars emoji personnalisés, noms de canaux sur mesure et buzz pour attirer l'attention. Privé & sécurisé Canaux privés par code, verrouillage de canal, blocage de contacts et contrôle de la confidentialité des notifications.

About

Relay

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Get every text you wish to the place where you actually need it. Relay automatically forwards the iPhone messages that you choose to Telegram, WhatsApp, Email, Slack, and other destinations. One Apple Shortcut. Set up in 60 seconds. Runs forever. Advanced features like Quiet Hours, Duplicate Detection, Activity History, Approval, Smart Filters etc. makes Relay unique and powerful. REAL THINGS PEOPLE USE RELAY FOR Read OTPs on your laptop while your phone charges in another room. Get bank transaction alerts in Slack so your finance team sees them live. Forward delivery codes to WhatsApp so your partner can let the courier in when you are out. Mirror texts from a travel SIM to your primary chat when you are abroad. Share OTPs with a parent or partner who needs them across devices. Pipe verification codes into a private Telegram chat for searchable history. Send incoming SMS to your own webhook for automations like n8n, Make, or Zapier. Keep delivery, banking, and personal texts visible on your work computer without picking up the phone. WHERE YOU CAN FORWARD Telegram, with one tap pairing or your own bot WhatsApp, forwarding to a contact with one tap to confirm Email, any inbox: Gmail, Outlook, ProtonMail, custom domains Slack, post to any channel via webhook Discord, post to any channel via webhook Microsoft Teams, post via Power Automate flow Webhook, any URL for your own tooling Phone, forward to another iPhone via Shortcuts Free includes up to 3 destinations. Relay Pro unlocks unlimited - send the same text to multiple places at once. SMART ROUTING Decide where each kind of message goes. Bank alerts to email. OTPs to Telegram. Delivery codes to WhatsApp. Personal texts stay private. Filter by category, sender, or keyword. Combine criteria with AND inside a rule and OR across rules. QUIET HOURS Pause forwarding to specific destinations during specific hours. No 3am Slack pings. Day of week control. Overnight windows handled cleanly. LIGHT TRANSFORMS Customize how forwarded texts read at the destination. Add the sender as a prefix. Strip promotional footers. Remove bracketed prefixes so the message arrives clean. YOUR MESSAGES STAY ON YOUR DEVICE Every SMS, every routing rule, and every classification result lives on your iPhone. Relay never uploads your message content to our servers and never shares it with anyone except the destinations you choose. No account, no sign-in, no profile, no cloud sync of your messages. HOW IT WORKS For Relay to work properly, you have to configure an automation using Apple Shortcuts for the app to get access to new incoming SMS. Relay cannot directly access your text messages or messaging history. When the Shortcut automation runs, the message content and sender name pass through Relay, classify on device, and forward only to the destinations you have pre-configured. You can even set up a confirmation step before anything is forwarded. Setup takes 60 seconds. Runs forever. Never needs touching again. RELAY PRO Relay is free to use. For advanced use cases, you can opt for a paid subscription of Relay Pro, which unlocks unlimited forwarding, unlimited destinations, unlimited smart-filter rules, and your full activity history. Multiple subscription plans are available — weekly, monthly, and annual, with a free trial on the annual plan. Pricing is shown in your local currency at checkout. Payment is charged to your Apple ID at purchase. Subscriptions auto-renew unless turned off at least 24 hours before the end of the current period. You can manage or cancel anytime in your App Store account settings. Terms of Use: https://relaysms.app/terms Privacy Policy: https://relaysms.app/privacy

Screenshots

Flash 14 screens
Relay4 screens

Verdict

The call

The clearest difference is in-app purchases: Flash 1 at none against Relay's 3. Flash 1 also leads on ads (none vs shown) and iOS requirement (15.1 vs 17.0). On price, update cadence 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. Relay sells 3 in-app purchases, starting at $4.99 per 7 days. Flash 1 asks for nothing beyond the download.

UpkeepUpdate frequency

Flash 1 ships an update every 8 days, Relay weekly. The most recent releases landed on October 15, 2026 and October 9, 2026 respectively.

Scorecard3 real differences · 3 level
Flash 1 versus Relay: the parameters behind the verdict, then further details
ParameterFlash 1Relay
PriceFreeFree
Update frequencyEvery 8 daysWeekly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better17.0
Further details — not scored
Size41 MB52 MB
Age rating4+4+
Developerandy almecijaNorth Studio

In-app purchases

None

Flash 1

No in-app purchases

3 purchases

Relay

Subscriptions3
  • Relay Pro Weekly3 Days trial$4.997 Days
  • Relay Pro Monthly$9.991 Month
  • Relay Pro Annual7 Days trial$89.991 Year

Questions

Is Flash 1 free?
Flash 1 is free to download, with no in-app purchases.
Is Relay free?
Relay is free to download, with in-app purchases available.
Do Flash 1 or Relay have ads?
Relay shows ads; Flash 1 does not.
Which is updated more often, Flash 1 or Relay?
Flash 1 ships an update every 8 days, and Relay weekly. Most recently, Flash 1 was updated on October 15, 2026 and Relay on October 9, 2026.

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