Comparison

PHY vs Shelby

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

Head to head
About

PHY

Access your scan reports and personalized movement plans on the go. Watch exercise demonstrations and track your daily routine progress.

Highlights
  • Access scan reports
  • View movement plans
  • Exercise video demonstrations
  • Track daily routine progress
Features
Read full description

The Phy app gives you mobile access to your Phy scan reports and movement plans. Watch videos of how to perform each exercise and then use the app to track your progress as you complete your daily routines. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Shelby

Features
Read full description

Meet Shelby, your friendly neck workout buddy Spend all day at a desk or scrolling on your phone? Your neck feels it. Shelby turns simple neck moves into a fun little game you will actually want to come back to. No equipment. No complicated routines. Just you, your camera, and a cheerful turtle. 1.How it works Prop up your phone and let the camera be your controller. Do three easy moves, Side Tilt, Look Up, and Head Turn, and watch Shelby climb higher with every rep. Dings, confetti, and one very proud turtle included. Just 2 minutes a day. That is it. Why you will love it Fun, game like neck moves, not a boring routine Your face is the controller, completely hands free Watch Shelby climb as you move Build a daily streak and keep it alive Gentle daily reminders at your chosen time Simple, playful, and quick 2.Made for Desk workers and anyone glued to a screen People who want an easy daily movement habit Anyone who would rather play than work out Keep it simple Shelby is not another intense fitness app. It is a tiny, feel good daily habit. Two minutes to loosen up, have fun, and give your neck a little break. Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

PHY4 screens
Shelby4 screens

Verdict

The call

The clearest difference is ads: Shelby at none against PHY's shown. Shelby also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, in-app purchases 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. PHY sells 2 in-app purchases, starting at $14.99 per month and Shelby sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

Scorecard2 real differences · 8 level
PHY versus Shelby: the parameters behind the verdict, then further details
ParameterPHYShelby
PriceFreeFree
Rating4.7 (30 ratings) — better—
Positive reviews92.3% of reviews—
Number of ratings30 — better—
Update frequencyWeeklyWeekly
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.013.0 — better
Further details — not scored
Size114 MB93 MB
Age rating4+4+
DeveloperPhyxd, Inc.Nguyen Manh

In-app purchases

2 purchases

PHY

Subscriptions2
  • Phy Premium Monthly3 Days trial$14.991 Month
  • Premium Yearly7 Days trial$149.991 Year
2 purchases

Shelby

Subscriptions2
  • Monthly$9.991 Month
  • Yearly Pro$34.991 Year

Questions

Is PHY free?
PHY is free to download, with in-app purchases available.
Is Shelby free?
Shelby is free to download, with in-app purchases available.
Do PHY or Shelby have ads?
PHY shows ads; Shelby does not.
Which is updated more often, PHY or Shelby?
PHY ships an update weekly, and Shelby weekly. Most recently, PHY was updated on October 14, 2026 and Shelby on October 11, 2026.

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