Comparison

Life by Synheart vs do not text them

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

Head to head
About

Life by Synheart

This app analyzes your behavioral and biosignal data to provide insights into your mental and physical state. It offers daily readings on readiness, stress, and recovery, with a conversational AI companion for personalized feedback. Privacy is a core focus, with on-device processing and no capture of personal content.

Highlights
  • Behavioral biosignal analysis
  • Readiness and stress indicators
  • On-device conversational AI
  • Typing rhythm analysis
  • Wearable data integration
  • Privacy-focused design
  • Daily state readings
Features
Read full description

Life is a life companion powered by Synheart's Human State Interface (HSI). It reads your behavioral biosignal and contextual data — how you type, your heart rhythm and what's going on from a wearable, your pauses, your rhythm — and gives you back a clearer sense of your own state. Focus. Stress. Recovery. Mental load. The things you usually feel but can't quite name. No content. No labels. No verdicts. Just your own patterns, in plain language. WHAT HSI ACTUALLY IS The Human State Interface is a new way for your devices to understand you — not through what you say or write, but through the signals your body and behavior naturally produce. Typing rhythm. Heart rate variability. Pauses. Bursts. Effort. Life turns those signals into a few honest indicators you can actually use through the day. YOUR DAILY READ • Readiness: how prepared your mind seems for focused work today • Regulation: Regulated, Mixed, or Dysregulated, based on how steady your focus has been • Mental Load: how demanding your day actually looked • Restorative: how rested your body is, the reserve your mind leans on • Focus Stability, Attention Continuity, Typing Effort, Engagement Capacity • Rhythm, Burstiness, Stress, Recovery, Strain — live, in the moment SYNI, YOUR PRIVATE COMPANION Syni is the conversational side of Life. Stressed, overwhelmed, or just curious about why today feels off — Syni reads your recent HSI signals and talks with you about what they suggest. It runs on-device. Conversations stay on your device. BEHAVIORAL + BIOSIGNAL, TOGETHER • Behavioral: the Synheart Keyboard captures the shape of your typing — never the words • Biosignal: pair a wearable to add heart-rhythm context like HRV and recovery • Either works alone. Together, the read gets richer. PRIVACY IS THE FOUNDATION, NOT A FEATURE • No text, passwords, or content ever captured • All processing on-device by default • Wearables are optional • Export or delete your data anytime • No emotion labels stored, no diagnoses SYNHEART PLUS Cloud Syni, full history, and the web dashboard — your companion, on any device. • Unlimited data history (Free is 30 days) • Encrypted cloud backup • Multi-device sync • Long-term trends across weeks and months A NOTE ON WHAT LIFE IS NOT Life is not a medical device. It does not diagnose. It does not score you as a person. It describes patterns in your behavior and biosignals — that's it. A "Mixed" reading is information, not a problem to fix. Trends matter more than any single window. Human signal intelligence, built privacy-first. A product of Synheart. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://synheart.ai/privacy

About

do not text them

This app provides a pause before sending impulsive texts, offering situation-based reminders and grounded perspectives on unsent drafts. It helps users resist sending messages they might regret and celebrates the decision not to text.

Highlights
  • Situation-based reminders
  • Unsent text draft analysis
  • Resisted text logging
  • Quote shuffling
  • Home Screen widget integration
  • Private by design
Features
Read full description

About to text them? Open this app instead. This is a small pause between impulse and send. WHAT YOU GET • Situation-based reminders — Choose what fits (late-night impulse, mixed signals, closure, and more). Each situation has its own deck of quotes so the message actually lands. • Unsent text help — Paste the draft you almost sent. Get a short, grounded perspective on why it can stay unsent. Your drafts save on your device so you can come back when the urge spikes again. • “I didn't text him” — Tap when you resisted. A little celebration, because not sending is the win. • Another quote — Shuffle a new line in your situation. • iPhone Home Screen widget — Keep your current reminder on the Home Screen. Medium widget (iOS 17+): shuffle quotes and log “I didn't text him” right from the widget. Small widget: your quote at a glance; tap to open the app. Quotes stay in sync when you return to the app. • Private by design — No account. No ads. Your situation, quote progress, and unsent drafts stay on your phone unless you use the optional coach (see Privacy Policy). WHEN TO USE IT You typed a paragraph at 2 a.m. You want to “check in” after ghosting. You’re negotiating with yourself about one more message. You don’t need a lecture—you need one clear line and permission to close the thread. HOW IT WORKS 1. Pick the situation that fits closest. 2. Read one reminder (or add the widget so it’s always visible). 3. If you already wrote the text, open Unsent text instead of Messages. Get a new perspective. 4. Tap “I didn't text him” when you choose not to send. Support: support@donttexthim.app

Screenshots

Life by Synheart4 screens
do not text them4 screens

Verdict

The call

The clearest difference is price: Life by Synheart at Free against do not text them's $0.99. do not text them's advantage is in-app purchases (none vs 1) and update cadence (daily vs weekly). On rating, 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

Life by Synheart is free to download; do not text them costs $0.99 up front. Life by Synheart sells 1 in-app purchase, starting at $9.99 per month. do not text them asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Life by Synheart against 5.0 for do not text them. Both are backed by a comparable volume of ratings — 2 and 6 respectively.

UpkeepUpdate frequency

Life by Synheart ships an update weekly, do not text them daily. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard5 real differences · 5 level
Life by Synheart versus do not text them: the parameters behind the verdict, then further details
ParameterLife by Synheartdo not text them
PriceFree — better$0.99
Rating5.0 (2 ratings)5.0 (6 ratings)
Positive reviews—100.0% of reviews
Number of ratings26 — better
Update frequencyWeeklyDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium — betterPaid
DevicesiPhone, Apple WatchiPhone, iPod
Requires iOS16.015.1 — better
Further details — not scored
Size105 MB33 MB
Age rating4+12+
DeveloperSynheart AI IncLeyla Arcasoy

Customer experience

Life by Synheart

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

do not text them

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Life by Synheart

Subscriptions1
  • Syni Plus (Monthly)7 Days trial$9.991 Month
None

do not text them

No in-app purchases

Questions

Is Life by Synheart free?
Life by Synheart is free to download, with in-app purchases available.
Is do not text them free?
do not text them costs $0.99, with no in-app purchases.
Which has better reviews, Life by Synheart or do not text them?
Life by Synheart and do not text them are both rated 5.0 out of 5 on the App Store, from 2 and 6 ratings respectively.
Do Life by Synheart or do not text them have ads?
Neither Life by Synheart nor do not text them shows ads.
Which is updated more often, Life by Synheart or do not text them?
Life by Synheart ships an update weekly, and do not text them daily. Most recently, Life by Synheart was updated on October 24, 2026 and do not text them on October 25, 2026.

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