# Nestline — Simple investment modeling

> On-device financial planning and investment modeling tools. (iPhone/iPad app by SAURIN BIPIN PARIKH.)

- Source: https://appshunter.io/ios/app/nestline/id6756862734 (this page in markdown: same URL + `.md`)
- Developer: [SAURIN BIPIN PARIKH](https://appshunter.io/developer/1863307654)
- Category: Finance, Utilities
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 1 MB
- Languages: American English
- Released: 2026-01-02
- Data updated: 2026-06-30
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/nestline/id6756862734/reviews.md

## What is Nestline?

Nestline helps you plan your financial future with simple, powerful tools — all running entirely on your device.

Model flexible investing scenarios with changing contributions, withdrawals, and growth rates across multiple periods. Nestline simulates compounding growth step-by-step and clearly separates what you invested from what you earned.

Tools:
• Simple Calculator — Quick investment projections with per-period contributions or withdrawals.
• Pro Calculator — Advanced scenarios with contribution ramps, multiple frequencies, withdrawal strategies, and inflation adjustment.
• Budget — Track income, taxes, deductions, and expenses to find your monthly surplus and estimate a portfolio target using the 4% rule.
• Tax Estimator — Estimate federal income tax (US) with progressive bracket-by-bracket breakdowns for 2025 and 2026.

Features:
• Math expressions in any numeric field (e.g. 500+200)
• Export results to CSV from any tool
• Fully on-device — no accounts, no tracking
• Designed for long-term financial clarity

Nestline is for educational and planning purposes only.

## Key features

- Flexible investment scenario modeling
- Step-by-step compounding growth simulation
- Budget tracking for income and expenses
- US federal income tax estimation
- Math expressions in numeric fields
- Export results to CSV
- Fully on-device operation

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/nestline/id6756862734/reviews.md

### 5/5 — Best investment planning tool!

*2026-03-11*

Makes it easy to track growth if investments, adjust for inflation and also account for withdrawals!

## Frequently asked questions about Nestline

### What is Nestline?

Nestline is a free application designed for financial planning and investment modeling. It offers tools to model flexible investing scenarios, track budgets, and estimate taxes, all running entirely on your device.

### How does Nestline ensure security?

Nestline prioritizes user security by operating entirely on-device. This means no accounts are required, and your financial data is not tracked or stored by the developer, providing a private planning experience.

### What investment scenarios can Nestline model?

Nestline allows you to model flexible investment scenarios with changing contributions, withdrawals, and growth rates across multiple periods. It simulates compounding growth step-by-step.

### Does Nestline support international tax estimations?

Currently, Nestline's Tax Estimator tool specifically estimates federal income tax for the US, with progressive bracket-by-bracket breakdowns for 2025 and 2026. It does not support international tax estimations.

### Can I export my financial data from Nestline?

Yes, Nestline allows you to export results to CSV format from any of its tools, including the Simple Calculator, Pro Calculator, Budget, and Tax Estimator.

### What devices is Nestline available on?

Nestline is available on iPhone and iPad, making it accessible for users on Apple's mobile and tablet platforms.

### How often is Nestline updated?

The latest version of Nestline is 4.0, and it was last updated on March 28, 2026. This indicates a recent update, suggesting ongoing development and support.

### Does Nestline have ads?

No, Nestline does not contain advertisements. As a free application, it provides an ad-free experience for users focused on financial planning.

## Version history (last 5 releases)

### 4.0 — 2026-03-28

Major Updates:
- Added a Tax Estimator for calculating US Federal Tax estimates

Minor Updates:
- Bug Fixes
- Ability to perform mathematical functions in numeric fields

### 3.3 — 2026-03-07

Bug fixes.

### 3.2 — 2026-01-05

Major Update:
This update adds a new Budget (Income & Expenses) calculator to help estimate monthly surplus and connect spending to savings/portfolio targets. 

Minor Update:
Dedicated settings screen and bug fixes.

### 3.0 — 2026-01-04

Major Update:

- Added a new Pro calculator for more advanced scenarios, including configurable contribution schedules, contribution growth (“ramp”), optional withdrawals, and inflation-adjusted (“real”) results.
- Added a new “How calculations work” page explaining the calculation approach, key assumptions, and known limitations for both calculators.

### 2.0 — 2026-01-03

Major Update:
- Graph is now interactive with a full screen option.
- Ability to share results as a CSV file.

Minor Update:
- Fixed keyboard glitch that prevented it from hiding.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-30.*