Perimeter vs Greybobby
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Perimeter
This app supports middle school discipleship groups by providing access to curriculum, scripture readings, and note-taking features. It is designed for use by participants of Perimeter Church's middle school program.
- View curriculum
- Read scripture
- Take notes
- Mobile access
- Discipleship group support
Read full descriptionHide full description
A companion app to middle school discipleship groups at Perimeter Church. You can view your curriculum, read scripture and take notes all on your mobile device. Please note: This app is intended to be used alongside participation in a Middle School discipleship group at Perimeter Church.
Greybobby
Read full descriptionHide full description
Welcome to the Greybobby app! This app hosts cartoons, music, lessons, and more content designed to help parents disciple and equip their families to become devoted followers of Christ. Mobile app version: 6.18.1
Screenshots
Verdict
The clearest difference is iOS requirement: Perimeter at 13.4 against Greybobby's 15.1. On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 6, 2026 and September 27, 2026 respectively.
| Parameter | Perimeter | Greybobby |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple TV — better |
| Requires iOS | 13.4 — better | 15.1 |
| Further details — not scored | ||
| Size | 48 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | Perimeter Church, Inc. | Greybobby Ministries Inc |
In-app purchases
Perimeter
No in-app purchases
Greybobby
No in-app purchases
Questions
Is Perimeter free?
Is Greybobby free?
Do Perimeter or Greybobby have ads?
Which is updated more often, Perimeter or Greybobby?
Other comparisons
