Comparison

Sender vs Tummy Scan

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

Head to head
About

Sender

This app provides a focused way to send emails without the distraction of an inbox. It utilizes SMTP to send messages, allowing you to connect your preferred email provider. Ideal for quick dispatches when you need to avoid the complexities of a traditional email client.

Highlights
  • Send emails only
  • No inbox or distractions
  • SMTP protocol support
  • Connect your email provider
  • Create specific app passwords
  • Inbox-stressless phone experience
Features
Read full description

A tiny app that allows you to send email, but not receive. No inbox, no distraction. For those who are tired of the busy email bandwagon but still needs to dash off a quick email on a go. Why not using regular email app with silenced notifications? Because it requires willpower, which we have only little. Don't test yourself, have a system that works just as needed. Sender sends emails via SMTP, which stands for Simple Mail Transfer Protocol. This is what email is supposed to be, right? Set up your email provider of choice in the app, and you're good to go. Every major email provider allows sending with SMTP protocol. You'll just need to create a specific password. There are links for instructions in the app to help with that. Enjoy inbox-stressless phone!

About

Tummy Scan

Features
Read full description

"I'm full." "I'm not hungry." "I don't want to eat." Sound familiar? Every parent knows the mealtime struggle. You've made the food, set the table, and your kid has taken two bites of rice and declared they're done. You know they're not full. They know they're not full. But try convincing a 4-year-old of that. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ What if your phone could settle the argument? Tummy Scanner turns your phone into a "tummy fullness detector." Your child places the phone on their tummy, watches a real-time scanning animation, and gets a scientific-looking percentage of how full they are. "Only 27%? I need to eat more!" That's the magic. The result comes from *you*, not from an argument. An invisible slider lets you secretly set the number before the scan completes. Your child sees science. You get peace at dinner. **How it works:** - A convincing scanning animation with haptic feedback. - You secretly control the result with a hidden slider - Kids see a percentage they actually believe - Tap on organs to learn about digestion (Mouth, Stomach, Intestines, and more) Why parents love it: No more "eat three more bites" negotiations Kids *ask* to be scanned — they're excited, not resistant Works at home, at restaurants, at grandma's house Sneaky onboarding teaches you the trick without kids seeing **A note on the magic:** The "Top Secret" page in setup explains everything to grown-ups. Just don't let little eyes see it. No accounts. No ads. No data collection. No internet required. Less than a dollar / month — cheaper than the food they leave on the plate.

Screenshots

Sender4 screens
Tummy Scan4 screens

Verdict

The call

The clearest difference is in-app purchases: Sender at none against Tummy Scan's 1. Tummy Scan's advantage is update cadence (every 5 days vs monthly) and iOS requirement (15.1 vs 17). On price, ads 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. Tummy Scan sells 1 in-app purchase, starting at $0.49 per month. Sender asks for nothing beyond the download.

UpkeepUpdate frequency

Sender ships an update monthly, Tummy Scan every 5 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 6 level
Sender versus Tummy Scan: the parameters behind the verdict, then further details
ParameterSenderTummy Scan
PriceFreeFree
Rating4.5 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyMonthlyEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhoneiPhone, iPod — better
Requires iOS1715.1 — better
Further details — not scored
Size13 MB43 MB
Age rating4+4+
DeveloperSerhii PryimachukRahul Devaskar

In-app purchases

None

Sender

No in-app purchases

1 purchases

Tummy Scan

Subscriptions1
  • Monthly3 Days trial$0.491 Month

Questions

Is Sender free?
Sender is free to download, with no in-app purchases.
Is Tummy Scan free?
Tummy Scan is free to download, with in-app purchases available.
Do Sender or Tummy Scan have ads?
Neither Sender nor Tummy Scan shows ads.
Which is updated more often, Sender or Tummy Scan?
Sender ships an update monthly, and Tummy Scan every 5 days. Most recently, Sender was updated on November 3, 2026 and Tummy Scan on October 31, 2026.

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