# Grid Post Pic Collage Maker vs UNUM

The clearest difference is update cadence: UNUM at fortnightly against Grid Post Pic Collage Maker's every 4 months. UNUM also leads on chart position (#91 vs unranked). Grid Post Pic Collage Maker's advantage is review sentiment (61% vs 36%) and iOS requirement (12.1 vs 18.0). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Grid Post Pic Collage Maker sells 4 in-app purchases, starting at $1.99 per 7 days and UNUM sells 17 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.5 for Grid Post Pic Collage Maker against 4.5 for UNUM. Both are backed by a comparable volume of ratings — 7K and 12K respectively. Written reviews are what separate them: 61% of Grid Post Pic Collage Maker's written reviews are positive against 36% of UNUM's.

Grid Post Pic Collage Maker ships an update every 4 months, UNUM fortnightly. The most recent releases landed on September 19, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Grid Post Pic Collage Maker | UNUM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (7K ratings)](https://appshunter.io/ios/app/grid-post-pic-collage-maker/id1014917264/reviews) | [4.5 (12K ratings)](https://appshunter.io/ios/app/unum-layout-and-feed-preview/id1057252115/reviews) |
| Number of ratings | 7K | **12K** |
| Positive reviews | **61.5% of reviews** | 35.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Freemium |
| Best chart rank | — | **#91** |
| Size | 72 MB | 197 MB |
| Requires iOS | **12.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Qianhai Happy Tour Network Technology Co., Ltd.](https://appshunter.io/developer/1516861691) | [UNUM, Inc.](https://appshunter.io/developer/1057252114) |

## What reviewers say

### Grid Post Pic Collage Maker

[App page](https://appshunter.io/ios/app/grid-post-pic-collage-maker/id1014917264)

Create unique social media profiles by dividing photos and videos into multiple posts. This app helps you design eye-catching banner-style images for your profile page, making your content stand out.

**Highlights:** Create 50+ grid types, Suggests images for posting, Easy photo cropping, Add videos to grids, Profile banner creation

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 九宫格周会员 | $1.99 | per 7 days |
| Half Year Membership | $2.99 | per 6 months |
| Yearly Membership | $5.99 | per year |
| Upgrade To Pro Version | $19.99 | one-time |

**What reviewers like**

- 👍 Good app
- 🚀 Simple and easy to use
- 💡 Useful features like grid layout and video support
- 🔒 Paid version removes watermark

**What reviewers complain about**

- 🐛 Glitchy and buggy
- 🔍 Restore purchase feature doesn't work
- 🔍 Can't restore purchases on new devices
- 🔍 Watermark not removed even after paying
- 🔍 Image quality degrades after processing

**Reported bugs**

- Splitting photos into grids doesn't work as expected
- App crashes when trying to save/export grid
- Grid layout gets reduced to fewer squares than selected
- App freezes or gets stuck on loading screens

**Requested features**

- Add more grid layout options
- Improve video compression quality
- Allow adding images from favorites/albums
- Add option to edit grid layout


### UNUM

[App page](https://appshunter.io/ios/app/unum-layout-and-feed-preview/id1057252115)

**Currently charting:** #91 Top Grossing · Graphics & Design (US App Store)

This app is an all-in-one social media management tool for creators and teams. It offers AI-powered content creation, advanced photo and video editing, analytics, scheduling, and a link-in-bio website builder. Collaborate in real-time and grow your brand faster.

**Highlights:** AI content generation (captions, hashtags, resizing), Advanced photo and video editing tools, Social media analytics and insights, Post scheduling and autoposting, Link-in-bio website builder, Real-time team collaboration

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (17)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UNUM Lite - Monthly | $2.99 | per month |
| Creator Plan — Monthly | $6.00 | per month |
| Creator Plan — Monthly | $6.00 | per month |
| Elite Plan | $6.99 | per month |
| Pro Monthly Plan | $6.99 | per month |
| Beginner Plan | $7.99 | per 2 months |
| UNUM PRO Membership | $8.99 | per month |
| Monthly Creator Plan | $9.00 | per month |
| UNUM Pro Monthly | $9.00 | per month |
| Creator Plan — Monthly | $11.99 | per month |
| UNUM Lite - Yearly | $12.99 | per year |
| Business Plan — Monthly | $14.99 | per month |
| UNUM Pro | $54.00 | per year |
| UNUM Pro | $54.00 | per year |
| UNUM Elite | $59.99 | per year |
| Elite Yearly | $59.99 | per year |
| Lifetime Subscription | Free | one-time |

**What reviewers like**

- 🚀 Helpful for planning Instagram feed
- 📊 Useful analytics and insights
- 🎨 Good editing tools
- 📂 Ability to manage multiple accounts

**What reviewers complain about**

- 🐛 Frequent glitches and bugs
- 🔒 Concerns over content ownership rights
- 💰 Expensive subscription model
- 🤔 Confusing UI changes with recent updates
- 🔍 Inability to see Reels and IGTV content in the grid

**Reported bugs**

- Photos disappearing from planned grid
- Inability to log in or connect Instagram accounts
- Inconsistent behavior when adding/removing photos

**Requested features**

- Ability to plan and preview Stories
- Improved grid shifting and rearranging functionality
- Better integration with Instagram's latest features
- More detailed analytics and insights


## Frequently asked questions

### Is Grid Post Pic Collage Maker free?

Grid Post Pic Collage Maker is free to download, with in-app purchases available.

### Is UNUM free?

UNUM is free to download, with in-app purchases available.

### Which has better reviews, Grid Post Pic Collage Maker or UNUM?

Grid Post Pic Collage Maker and UNUM are both rated 4.5 out of 5 on the App Store, from 7K and 12K ratings respectively.

### Do Grid Post Pic Collage Maker or UNUM have ads?

Neither Grid Post Pic Collage Maker nor UNUM shows ads.

### Which is updated more often, Grid Post Pic Collage Maker or UNUM?

Grid Post Pic Collage Maker ships an update every 4 months, and UNUM fortnightly. Most recently, Grid Post Pic Collage Maker was updated on September 19, 2026 and UNUM on September 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*