# Flow vs Needle Search Builder

The clearest difference is price: Needle Search Builder at Free against Flow's $9.99. Needle Search Builder also leads on rating (5.0 vs 4.0). Flow's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 17.0). On ratings volume, update cadence, ads and device support there is nothing between them.

Needle Search Builder is free to download; Flow costs $9.99 up front. Needle Search Builder sells 1 in-app purchase, starting at $0.99 per month. Flow asks for nothing beyond the download.

Needle Search Builder holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 5 respectively.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Flow | Needle Search Builder |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/flow-period-and-cycle-tracker/id6749810198/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/needle-search-builder/id6791816761/reviews)** |
| Number of ratings | 4 | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 28 MB | 1 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Chowdhury Sabir Morshed](https://appshunter.io/developer/1820630396) | [Kyle Lawlor](https://appshunter.io/developer/6791816764) |

## What reviewers say

### Flow

[App page](https://appshunter.io/ios/app/flow-period-and-cycle-tracker/id6749810198)

This app helps you understand and manage your menstrual cycle. It provides accurate predictions for your period, fertility, and ovulation, along with tools to track PMS symptoms. Your health data is kept private and secure.

**Highlights:** Menstrual cycle tracking, Fertility and ovulation prediction, 6-month period calendar, Conception day discovery, PMS symptom management, Private and secure data

**Features:** macOS Compatibility

**In-app purchases:** none


### Needle Search Builder

[App page](https://appshunter.io/ios/app/needle-search-builder/id6791816761)

This utility assists in crafting precise search queries when standard searches fall short. By answering targeted questions, it generates optimized search strings for platforms like Google, YouTube, and Reddit. It helps refine results by website, file type, date, and exclusions.

**Highlights:** Build precise search queries, Target specific websites, Search by file type, Filter by date range, Exclude unwanted terms, Search Reddit content

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Needle Pro Monthly | $0.99 | per month |


## Frequently asked questions

### Is Flow free?

Flow costs $9.99, with no in-app purchases.

### Is Needle Search Builder free?

Needle Search Builder is free to download, with in-app purchases available.

### Which has better reviews, Flow or Needle Search Builder?

Needle Search Builder is rated higher. Flow averages 4.0 out of 5 from 4 ratings, while Needle Search Builder averages 5.0 from 5 ratings.

### Do Flow or Needle Search Builder have ads?

Neither Flow nor Needle Search Builder shows ads.

### Which is updated more often, Flow or Needle Search Builder?

Flow ships an update weekly, and Needle Search Builder weekly. Most recently, Flow was updated on October 30, 2026 and Needle Search Builder on October 29, 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.*