# Stackby vs ZeroBounce

The clearest difference is rating: ZeroBounce at 5.0 against Stackby's 4.3. ZeroBounce also leads on review sentiment (100% vs 74%) and update cadence (every 9 days vs every 6 weeks). Stackby's advantage is in-app purchases (none vs 7) and ratings volume (42 vs 3). On price, ads and device support there is nothing between them.

Both are free to download. ZeroBounce sells 7 one-off in-app purchases. Stackby asks for nothing beyond the download.

ZeroBounce holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Stackby has 42 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 74% of Stackby's written reviews are positive against 100% of ZeroBounce's.

Stackby ships an update every 6 weeks, ZeroBounce every 9 days. The most recent releases landed on September 21, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Stackby | ZeroBounce |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (42 ratings)](https://appshunter.io/ios/app/stackby/id1528175767/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/zerobounce/id1671793296/reviews)** |
| Number of ratings | **42** | 3 |
| Positive reviews | 73.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 39 MB | 68 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Relytree Technologies Pvt. Ltd](https://appshunter.io/developer/1528175769) | [ZeroBounce](https://appshunter.io/developer/1671793298) |

## What reviewers say

### Stackby

[App page](https://appshunter.io/ios/app/stackby/id1528175767)

This app provides a flexible database platform to organize any type of information, from customer leads to project tasks and marketing campaigns. It allows real-time creation, management, and collaboration on databases from any mobile device, offering over 300 pre-built templates for quick setup.

**Highlights:** Organize information, Manage tasks and projects, Manage marketing campaigns, Real-time collaboration, 300+ pre-built templates, Cross-platform accessibility

**Features:** macOS Compatibility

**In-app purchases:** none


### ZeroBounce

[App page](https://appshunter.io/ios/app/zerobounce/id1671793296)

This service offers a fast and secure way to validate email addresses, ensuring your messages reach their intended recipients. It helps improve open rates and ROI with high accuracy, AI-driven scoring, and deliverability tools.

**Highlights:** Email list validation, Real-time bulk checking, AI-driven email scoring, Deliverability tools, Blacklist alerts

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 2000 credits | $39.00 | one-time |
| 5000 credits | $69.00 | one-time |
| 10000 credits | $129.00 | one-time |
| 25000 credits | $274.99 | one-time |
| 50000 credits | $499.00 | one-time |
| 100000 credits | $649.00 | one-time |
| 250000 credits | $1000.00 | one-time |


## Frequently asked questions

### Is Stackby free?

Stackby is free to download, with no in-app purchases.

### Is ZeroBounce free?

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

### Which has better reviews, Stackby or ZeroBounce?

ZeroBounce is rated higher. Stackby averages 4.3 out of 5 from 42 ratings, while ZeroBounce averages 5.0 from 3 ratings.

### Do Stackby or ZeroBounce have ads?

Neither Stackby nor ZeroBounce shows ads.

### Which is updated more often, Stackby or ZeroBounce?

Stackby ships an update every 6 weeks, and ZeroBounce every 9 days. Most recently, Stackby was updated on September 21, 2026 and ZeroBounce on September 23, 2026.

---

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