Comparison

Tiny JPEG/PNG/HEIC Compressor vs Shift Rail

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

Head to head
About

Tiny JPEG/PNG/HEIC Compressor

This utility reduces the file size of images and PDFs without compromising visual quality. It efficiently converts large files to smaller ones in seconds, operating offline and ensuring user privacy by not uploading any data. Supports a wide range of formats including JPEG, PNG, HEIC, and PDF.

Highlights
  • Compresses JPEG, PNG, WebP, GIF, HEIC, HEIF, and PDF
  • Reduces file size from MB to KB
  • Offline operation
  • No data upload
  • Maintains image quality
Features
Read full description

Heavy images slow down everything. This image compressor makes them lighter without making them ugly. MB to KB in seconds. Drop in your files, get smaller images back. Works offline on your computer—nothing gets uploaded anywhere. Not only PNG, we tiny everything with bullet proof algorithm. Supports PNG, JPEG, WebP, GIF, HEIC, HEIF, and PDF. Simple tools work best. Terms of Use: http://www.apple.com/legal/itunes/appstore/dev/stdeula

About

Shift Rail

Read full description

An ad-free shift calendar that shows today's shift the moment you open it. ROSTER Pick your rotation and tap which shift today is — the whole month fills in, no start date to work out. Start from 2-shift, 3-shift, day–night–off–rest, 24-hour duty or weekday presets, or build your own rotation of 2 to 28 days. • A month calendar with day, evening, night, duty, off and rest days in their own colors, starting on your device's first weekday • Tap a date to change just that day: leave, a swapped shift, cover • Monthly totals, such as D 10 · N 10 · Off 5 · R 6 • Today, tomorrow and your next shift at the top of the app Saving, viewing and changing days in a roster works without Pro. ALARMS FROM YOUR ROSTER (PRO, FIRST 7 DAYS FREE TO TRY) Tap "Set alarms from this roster" and Shift Rail sets each date's alarms for that day's shift, 28 days ahead. The first time, you can try them for 7 days without Pro: the days left show on the first screen, and the alarms stop when the trial ends. The roster is the source: change a day and that day's alarms change too. When fewer than seven days are left, opening the app quietly tops them up. SHARE THE MONTH OR EXPORT A CALENDAR FILE (PRO) Send an image with the roster's name, month, calendar and totals through Messages, Photos and more, or export three months as a calendar file (.ics) for other calendar apps. Try each three times without Pro. ALARM ROUTINES FOR A SHIFTED DAY • Save separate routines for workdays, workouts, weekends, or shifts • Move a routine from 60 minutes earlier to 90 minutes later, comparing every time before applying • Set one alarm to a target time and preview the whole routine moving with it • Choose the system sound or one of four original Shift Rail sounds CAREFUL BY DESIGN Shift Rail uses Apple's AlarmKit framework to schedule its alarms. It checks the resulting schedule after a change. If the schedule needs attention, the app shows a repair state instead of claiming that everything worked. OPTIONAL PRO A one-time Pro purchase sets alarms from your roster, shares the month as an image, and saves named target-time plans such as Early shift or School run. There is no subscription. All original alarm features and rosters work without Pro, and rosters with alarms set and saved plans stay readable, usable and deletable if Pro access ends. IMPORTANT No ads, no sign-in, no server. Shift Rail manages only alarms created inside Shift Rail; it does not change alarms in Apple's Clock app. Alarm access is required. Roster alarms are scheduled up to 80 at a time, so a roster with many alarms covers fewer days. Vibration and volume follow iPhone system settings, and delivery remains subject to iOS and device settings. Rosters and routines stay on this iPhone. English and Korean are included.

Screenshots

Tiny JPEG/PNG/HEIC Compressor2 screens
Shift Rail4 screens

Verdict

The call

The clearest difference is update cadence: Shift Rail at every 10 days against Tiny JPEG/PNG/HEIC Compressor's every 2 months. Tiny JPEG/PNG/HEIC Compressor's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 26.0). On price, ads and in-app purchases 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. Tiny JPEG/PNG/HEIC Compressor sells 3 in-app purchases, starting at $1.99 per month and Shift Rail sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Tiny JPEG/PNG/HEIC Compressor ships an update every 2 months, Shift Rail every 10 days. The most recent releases landed on November 4, 2026 and November 13, 2026 respectively.

Scorecard3 real differences · 6 level
Tiny JPEG/PNG/HEIC Compressor versus Shift Rail: the parameters behind the verdict, then further details
ParameterTiny JPEG/PNG/HEIC CompressorShift Rail
PriceFreeFree
Rating4.6 (14 ratings) — better—
Number of ratings14 — better—
Update frequencyEvery 2 monthsEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better26.0
Further details — not scored
Size50 MB4 MB
Age rating17+4+
DeveloperShotdoorYEONWOO KIM

In-app purchases

3 purchases

Tiny JPEG/PNG/HEIC Compressor

Subscriptions2
  • 1 Month Pro$1.991 Month
  • 3 Months Pro$2.393 Months
One-time1
  • 100 Compression Credits$0.99
2 purchases

Shift Rail

One-time2
  • 7-Day Alarm TrialFree
  • Shift Rail Pro$0.99

Questions

Is Tiny JPEG/PNG/HEIC Compressor free?
Tiny JPEG/PNG/HEIC Compressor is free to download, with in-app purchases available.
Is Shift Rail free?
Shift Rail is free to download, with in-app purchases available.
Do Tiny JPEG/PNG/HEIC Compressor or Shift Rail have ads?
Neither Tiny JPEG/PNG/HEIC Compressor nor Shift Rail shows ads.
Which is updated more often, Tiny JPEG/PNG/HEIC Compressor or Shift Rail?
Tiny JPEG/PNG/HEIC Compressor ships an update every 2 months, and Shift Rail every 10 days. Most recently, Tiny JPEG/PNG/HEIC Compressor was updated on November 4, 2026 and Shift Rail on November 13, 2026.

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